Insert tooling and injection molds

Abstract

The present invention discloses an insert tooling and an injection mold, wherein the insert tooling includes: a nut fitting limit section and a stop seal section. At least a portion of the nut fitting limit section fits and is inserted into the inner hole of the nut, and is detachably fitted with the nut; the stop seal section is connected to one end of the nut fitting limit section, and the stop seal section is suitable for sealing with the port of the nut. The insert tooling can effectively solve the problem of easy encapsulation of the internal threads of the embedded nuts during the process of injection molding of injection molded parts such as cylinder covers, thereby improving the output rate and production efficiency of standard parts, and the insert tooling has a simpler structure and a longer service life.

Description

Technical Field

[0001] The present invention relates to the field of general mechanical technology, in particular to an insert tooling and an injection mold. Background Art

[0002] During the traditional nut pre-embedded injection molding process, the molten material easily flows into the inner hole of the nut, and the internal thread of the nut will be covered by the molten material, resulting in the problem of internal thread encapsulation of the nut, which in turn makes it impossible to insert and assemble the bolt normally, affecting the output rate of standard parts and reducing production efficiency. There is room for improvement. Summary of the Invention

[0003] In view of this, the present invention aims to propose an insert tooling, which can effectively solve the problem of easy glue encapsulation of the internal threads of embedded nuts during the injection molding process of injection molded parts such as cylinder covers, thereby improving the output rate of standard parts and production efficiency.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] An insert tooling comprises: a nut fitting limit section, at least a portion of which is adapted to be fitted and inserted into the inner hole of a nut and to be detachably fitted with the nut; and a stop sealing section, which is connected to one end of the nut fitting limit section and is adapted to be sealingly fitted with the port of the nut.

[0006] Furthermore, the nut fitting limit section and the stop sealing section are both constructed as columnar structures, and the diameter of the stop sealing section is larger than the diameter of the nut fitting limit section, and the end face of the stop sealing section is suitable for stop sealing with the port of the nut.

[0007] Furthermore, the nut fitting limit section is provided with a limit fitting structure, and the limit fitting structure is suitable for detachable limit fitting with the internal thread of the nut.

[0008] Furthermore, the position limiting cooperation structure includes: a ball mechanism, at least a portion of which is suitable for cooperating with the thread groove of the internal thread to limit the position.

[0009] Furthermore, a mounting groove is radially opened on the nut matching limit section, and the ball mechanism includes: a ball and an elastic reset structure, the ball and the elastic reset structure are respectively limitedly installed in the mounting groove, and at least a part of the ball extends out of a side notch of the mounting groove.

[0010] Furthermore, the notch on the other side of the installation groove is blocked by a blocking piece, and the elastic reset structure is abutted and clamped between the blocking piece and the ball.

[0011] Furthermore, there are multiple mounting grooves, each of which is used to install a group of ball mechanisms. The multiple mounting grooves are spaced apart along the axial direction of the nut matching limit section, and the spacing between the multiple mounting grooves is an integer multiple of the internal thread pitch.

[0012] Furthermore, the plurality of installation slots are opened in different directions.

[0013] Furthermore, at least one of the plurality of mounting grooves is arranged perpendicular to the remaining mounting grooves.

[0014] Compared with the prior art, the insert tooling of the present invention has the following advantages:

[0015] The insert tooling described in the present invention can effectively solve the problem of easy glue encapsulation of the internal threads of the embedded nuts during the injection molding process of injection molded parts such as cylinder covers, thereby improving the output rate and production efficiency of standard parts. In addition, the insert tooling has a simple structure and a longer service life.

[0016] Another object of the present invention is to provide an injection mold, including the above-mentioned insert tooling, wherein the stop sealing section is fixedly connected to the mold body of the injection mold, and the standard parts output rate and production efficiency of the injection mold are higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 is a schematic structural diagram of an insert tooling according to an embodiment of the present invention;

[0019] Figure 2 is a cross-sectional view of an insert tooling according to an embodiment of the present invention;

[0020] Figure 3 4 is a partial cross-sectional view of an insert tooling according to an embodiment of the present invention.

[0021] Description of reference numerals:

[0022] 100-insert tooling, 1-nut matching limit section, 11-ball mechanism, 111-ball, 112-elastic reset structure, 12-mounting groove, 13-sealing piece, 2-stop sealing section. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0024] Reference below Figure 1-Figure 3An insert fixture 100 according to an embodiment of the present invention is described.

[0025] The insert tool 100 according to the embodiment of the present invention may include: a nut matching limiting section 1 and a stop sealing section 2 .

[0026] like Figure 1 and Figure 2 As shown, plastic products (e.g., cylinder heads) require nuts to be fitted into corresponding holes to secure various accessories. To improve production efficiency, nuts are currently primarily assembled through pre-embedded injection molding.

[0027] During the traditional nut pre-embedded injection molding process, the molten material easily flows into the inner hole of the nut, and the internal thread of the nut will be covered by the molten material, resulting in the problem of internal thread encapsulation of the nut, which in turn makes it impossible to insert and assemble the bolt normally, affecting the output rate of standard parts and reducing production efficiency.

[0028] To this end, the present invention provides an insert tool 100 that can position the nut during the injection molding process and seal the inner hole of the nut. This prevents molten material from flowing into the inner hole of the nut, effectively solving the problem of rubber encapsulation on the internal threads of the nut and improving production efficiency.

[0029] Among them, the nut fitting limit section 1 is suitable for fitting with the nut during the injection molding process, that is, at least a part of the nut fitting limit section 1 is suitable for fitting and inserting into the inner hole of the nut to play the role of limiting the nut, thereby ensuring that during the injection molding process, the nut sleeved on the nut fitting limit section 1 can be limited to the current required position to ensure that the nut will not shake when the molten material flows through the position of the nut, thereby ensuring that after the injection molding is completed, the nut can be pre-buried in the exact position where it is to be installed, and also avoids the phenomenon that the molten material causes the nut to shake and a gap is generated between the stop sealing section 2 and the nut, thereby improving the sealing stability between the stop sealing section 2 and the nut.

[0030] In addition, the nut cooperates with the limiting section 1 to limit the nut in a detachable manner, so that the nut cooperates with the limiting section 1 to limit the nut at the required embedded position before injection molding, and can be removed from the nut and reused after injection molding, thereby reducing production costs.

[0031] Furthermore, the stop sealing section 2 is connected to one end of the nut matching limit section 1, and the stop sealing section 2 is suitable for sealing with the port of the nut, so that during the injection molding process, the inner hole of the nut is sealed by the sealing cooperation between the stop sealing section 2 and the port of the nut, thereby preventing the molten material from entering the inner hole of the nut from the port of the nut, thereby effectively solving the problem of rubber encapsulation of the internal thread of the nut, thereby improving production efficiency.

[0032] Specifically, during the injection molding process, the nut is sleeved on the nut matching limiting section 1, and the port of the nut is matched and sealed with the stop sealing section 2. The stop sealing section 2 is fixedly connected to the mold body of the injection mold to limit the nut to a specified position, thereby ensuring the installation accuracy of the nut. Furthermore, the molten material enters the mold cavity through the gate. When the molten material flows through the position of the nut, it will generate a lateral thrust on the nut. Due to the limiting effect of the nut matching limiting section 1 on the nut, it is ensured that the nut will not shake, and under the sealing cooperation between the stop sealing section 2 and the port of the nut, it is ensured that the molten material will not enter the inner hole of the nut, thereby effectively solving the problem of glue encapsulation of the internal thread of the nut, thereby improving production efficiency. Finally, after cooling, the injection mold is opened and the insert tooling 100 is taken out to achieve the matching installation of the nut and the injection molded product while completing the injection molding.

[0033] According to the insert tool 100 of the embodiment of the present invention, the insert tool 100 can effectively solve the problem of easy glue encapsulation of the internal threads of the embedded nuts during the injection molding process of injection molded parts such as cylinder covers, thereby improving the output rate and production efficiency of standard parts. In addition, the insert tool 100 has a simpler structure and a longer service life.

[0034] like Figure 1 and Figure 2 As shown, both the nut-fitting limiting section 1 and the stop-seal section 2 are columnar structures, such as cylinders. The diameter of the stop-seal section 2 is larger than that of the nut-fitting limiting section 1, and also greater than or equal to the diameter of the nut fitted over the nut-fitting limiting section 1. This ensures that the end face of the stop-seal section 2 can completely seal against the nut's port. This further ensures the sealing effect of the stop-seal section 2 on the nut's port.

[0035] According to some embodiments of the present invention, the total length of the insert tooling 100 can be limited to between 95 mm and 96 mm. Preferably, the total length of the insert tooling 100 can be limited to 95.09 mm. The length of the stop seal section 2 can be limited to between 54 mm and 55 mm. Preferably, the length of the stop seal section 2 can be limited to 54.79 mm. The length of the nut fitting limit section 1 can be limited to between 36 mm and 37 mm. Preferably, the length of the nut fitting limit section 1 can be limited to 36.30 mm.

[0036] Furthermore, the end surface of one end of the stop sealing section 2 connected to the nut and the limiting section 1 is stop-sealed with the port of the nut to ensure the sealing and limiting effects.

[0037] According to some embodiments of the present invention, the diameter of the stop sealing section 2 can be limited to between 10.98 mm and 11 mm, and the diameter of the nut fitting limit section 1 can be limited to between 4 mm and 5 mm. Preferably, the diameter of the nut fitting limit section 1 can be limited to 4.98 mm.

[0038] Combine Figure 2 and Figure 3 In the embodiment shown, the nut fitting limit section 1 has a limit fitting structure, and the limit fitting structure is suitable for detachable limit fitting with the internal thread of the nut, so as to realize the limitation of the nut by the nut fitting limit section 1 through the limit fitting between the internal thread and the limit fitting structure.

[0039] Further, refer to Figure 2 and Figure 3 The position-limiting structure includes a ball mechanism 11. At least a portion of the ball mechanism 11 is adapted to positionally engage with the thread groove of the internal thread, thereby achieving positional engagement between the nut engagement limiting section 1 and the nut. The groove structure defined between two adjacent threads on the internal thread of the nut is a thread groove. In other words, at least a portion of the ball mechanism 11 is adapted to positionally engage between the two adjacent threads, ensuring that the nut is stably retained in the nut engagement limiting section 1.

[0040] Furthermore, a mounting groove 12 is radially provided on the nut fitting limit section 1, and the ball mechanism 11 includes: a ball 111 and an elastic reset structure 112, wherein the ball 111 and the elastic reset structure 112 are respectively limitedly installed in the mounting groove 12, so that the ball 111 can move inward and outward along the extension direction of the mounting groove 12, thereby compressing the diameter of the nut fitting limit section 1 where the ball 111 is installed, and at least a portion of the ball 111 extends outside the notch on one side of the mounting groove 12, so that during the process of fitting the nut and the nut fitting limit section 1, the ball 111 can be compressed into the mounting groove 12 without affecting the normal insertion of the nut fitting limit section 1, until it reaches the specified position, the ball 111 returns to its original position under the elastic reset force of the elastic reset structure 112, and fits in the corresponding thread groove. Thus, the nut fitting limit section 1 is installed and limited with the nut during the compression and return of the ball 111.

[0041] The elastic reset structure 112 includes a coil spring with two or three turns, and the specific number of turns can be reasonably designed according to actual conditions.

[0042] Preferably, the height of at least a portion of the ball 111 extending out of the slot on one side of the mounting slot 12 can be limited to between 0.2 mm and 0.3 mm, so as to achieve stable cooperation with the threaded slot.

[0043] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 The mounting groove 12 passes through the nut-matching limiting section 1, and the other side of the mounting groove 12 is blocked by the blocking member 13. The elastic reset structure 112 is clamped between the blocking member 13 and the ball 111. This makes the overall structure of the limiting matching structure more stable, so that the elastic reset structure 112 can stably provide elastic reset force to the ball 111, thereby making the matching installation process of the nut-matching limiting section 1 and the nut, as well as the limiting between the two, more stable and reliable.

[0044] According to other embodiments of the present invention, the other side of the mounting groove 12 is a side wall, that is, the mounting groove 12 does not penetrate the nut matching limit section 1, wherein the elastic reset structure 112 is clamped between the side wall and the ball 111.

[0045] like Figure 1 As shown, there are multiple mounting grooves 12, each mounting groove 12 is suitable for installing a group of ball mechanisms 11, and multiple mounting grooves 12 are arranged at intervals along the axial direction of the nut matching limit section 1 to limit the nut at multiple locations, so that the insert tooling 100 has a better limiting effect on the nut, and the nut can be more stably limited on the nut matching limit section 1, so as to further ensure a stable stop seal between the stop seal section 2 and the port of the nut.

[0046] Moreover, the spacing between the multiple mounting grooves 12 is an integer multiple of the internal thread pitch, to ensure that the balls 111 on a group of ball mechanisms 11 installed in each mounting groove 12 can fall exactly into the thread groove, thereby ensuring the limiting fitting effect between the nut fitting limit section 1 and the nut.

[0047] Furthermore, the multiple installation slots 12 are opened in different directions to limit the nut in multiple directions, thereby further ensuring the stability of the nut's limit.

[0048] Furthermore, at least one of the multiple installation grooves 12 is arranged perpendicular to the other installation grooves 12 to ensure that the ball mechanism 11 is provided in two directions perpendicular to each other to limit the nut, thereby achieving stable positioning of the nut.

[0049] As a preferred embodiment, Figure 1 As shown, there are two mounting grooves 12, each of which is equipped with a set of ball mechanisms 11. The two mounting grooves 12 are vertically arranged, and the spacing between the two mounting grooves 12 can be 6 mm, wherein the distance between the axis of the mounting groove 12 close to the stop sealing segment 2 and the end face of the stop sealing segment 2 can be 4 mm, and the distance between the axis of the mounting groove 12 away from the stop sealing segment 2 and the end face of the stop sealing segment 2 can be 10 mm.

[0050] An injection mold according to another embodiment of the present invention includes the insert assembly 100 described in the above embodiment. The stop seal section 2 of the insert assembly 100 is fixedly connected to the mold body of the injection mold. The remaining structures of the injection mold are well known to those skilled in the art and will not be described in detail here.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An insert tool (100), characterized in that: include: A nut fitting limiting section (1), at least a portion of which is adapted to be fitted and inserted into the inner hole of the nut and to be detachably fitted with the nut; A stop seal section (2), the stop seal section (2) being connected to one end of the nut matching limit section (1), and the stop seal section (2) being suitable for sealingly matching with the end of the nut; The nut fitting limit section (1) is provided with a limit fitting structure, and the limit fitting structure is suitable for detachable limit fitting with the internal thread of the nut; The position limiting matching structure comprises: a ball mechanism (11), at least a portion of which is adapted to match and limit the position of the thread groove of the internal thread; A mounting groove (12) is radially provided on the nut matching limiting section (1), and the ball mechanism (11) comprises: a ball (111) and an elastic reset structure (112), the ball (111) and the elastic reset structure (112) are respectively limitedly mounted in the mounting groove (12), and at least a portion of the ball (111) extends out of a notch on one side of the mounting groove (12); The other side notch of the installation slot (12) is blocked by a blocking piece (13), and the elastic reset structure (112) is clamped between the blocking piece (13) and the ball (111); There are a plurality of mounting grooves (12), each of which is used to mount a group of ball mechanisms (11). The plurality of mounting grooves (12) are spaced apart along the axial direction of the nut fitting limit section (1), and the spacing between the plurality of mounting grooves (12) is an integer multiple of the internal thread pitch.

2. The insert tool (100) according to claim 1, characterized in that: The nut fitting limit section (1) and the stop seal section (2) are both constructed as columnar structures, and the diameter of the stop seal section (2) is larger than the diameter of the nut fitting limit section (1), and the end face of the stop seal section (2) is suitable for stop seal with the end of the nut.

3. The insert tool (100) according to claim 1, characterized in that: The multiple installation grooves (12) are opened in different directions.

4. The insert tool (100) according to claim 3, characterized in that: At least one of the plurality of mounting slots (12) is arranged perpendicular to the remaining mounting slots (12).

5. An injection mold, characterized in that: It comprises an insert tool (100) according to any one of claims 1 to 4, wherein the stop seal section (2) is fixedly connected to the mold body of the injection mold.

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