Multi-cavity threaded core-pulling mold

Abstract

The utility model relates to the technical field of injection molds, in particular to a multi-cavity threaded core-pulling mold which comprises a front mold assembly, a rear mold assembly, a threaded core-pulling assembly and a transverse core-pulling assembly, the rear mold assembly comprises a rear mold plate, the transverse core-pulling assembly comprises a first sliding block and a transverse core rod, and the front mold assembly comprises a front mold plate and an inclined guide column. At least two inclined through holes are formed in each first sliding block, the inclined guide columns are connected with the inclined through holes in a sliding mode and drive the first sliding blocks to slide in the set direction, and a plurality of cavity faces are arranged on the front mold plate and the rear mold plate respectively. A single first sliding block is used for driving a plurality of transverse core rods to move, so that the structure is simplified, at least two inclined through holes are further formed in the first sliding block, then at least two inclined guide columns are used for driving the first sliding block to move, and under the same space volume, more mold cavities can be formed in the mold, so that the mold structure is more compact. And more products can be produced through one-time injection molding of the mold, the mold use cost is reduced, and the product production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and more specifically, to a multi-cavity threaded core-pulling mold. Background Technology

[0002] For injection molded products with internal threads, injection molds with thread-pulling functions are required for production. These molds are also known as threaded molds, which are more complex in structure and larger in size than ordinary injection molds. For injection molded products with both internal threads and through holes or deep grooves, core pulling and demolding must be performed separately from the internal threads and through holes or deep grooves during injection molding. Furthermore, the thread pulling direction is different from the through hole or deep groove pulling direction for some products, further increasing the structural complexity of the injection molded product and the size of the mold. In this case, the number of products that a single injection mold can produce is relatively small, generally 1, 2, or 4. The mold produces a small number of products per injection, the mold usage cost is relatively high, and the overall production efficiency of the product is relatively low, resulting in excessively high product production costs. Utility Model Content

[0003] To overcome the shortcomings of the prior art, such as the limited number of products that can be produced in a single injection molding process and the low production efficiency, this utility model provides a multi-cavity threaded core-pulling mold, which allows a single mold to have more cavities, enabling the production of more products in a single injection molding process and improving production efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a multi-cavity threaded core-pulling mold, including a front mold assembly, a rear mold assembly slidably connected to the front mold assembly, a threaded core-pulling assembly connected to the rear mold assembly, and a transverse core-pulling assembly connected to the rear mold assembly. The rear mold assembly includes a rear template. The transverse core-pulling assembly includes at least two first sliders slidably connected to the rear template and a plurality of transverse core rods slidably connected to the first sliders. The front mold assembly includes a front template and a plurality of inclined guide posts slidably connected to the front template. Each first slider has at least two inclined through holes. The inclined guide posts are slidably connected to the inclined through holes and drive the first sliders to slide in a set direction. The core-pulling direction of the transverse core rods is consistent with the sliding direction of the first sliders. The front template and the rear template each have a plurality of cavity surfaces.

[0005] The front mold assembly is mounted on the external injection molding machine barrel, and the rear mold assembly is also mounted on the external injection molding machine. The threaded core-pulling assembly is located within the rear mold assembly and is used to form the internal threads of the product and for core-pulling demolding. In addition, a transverse core-pulling assembly is provided for forming through holes or grooves in other parts of the product. Specifically, the first slider in the transverse core-pulling assembly is slidably connected to the front mold plate, and multiple transverse core rods are connected to the first slider. These transverse core rods participate in the injection molding of the product, and their surfaces have cavity surfaces; their number matches the number of mold cavities. The transverse core rods achieve core-pulling demolding through the movement of the first slider. The first slider has oblique through holes, and the front mold plate of the front mold assembly is connected to oblique guide pillars. During mold opening, the oblique guide pillars abut against and slide relative to the oblique through holes, driving the first slider to slide. The sliding direction is consistent with the demolding direction of the transverse core rods, thus achieving demolding. To ensure smooth sliding of the first slider, at least two oblique through holes are provided on the first slider, and the number of oblique guide pillars corresponds to the number of oblique through holes, ensuring smooth demolding of the first slider. Sliding; In actual operation, the plastic raw material in the injection molding machine enters the injection cavity of the mold through the injection barrel and the front mold assembly. The mold cavity is formed by the cavities on the front and rear mold plates, the working end of the threaded core-pulling assembly, and the working surface of the transverse core rod. After injection, the front mold assembly remains stationary, while the rear mold assembly moves and opens under the drive of the injection molding machine. During this process, the first slider moves and demolds the transverse core rod under the action of the inclined guide post. After the transverse core rod is demolded and reset, the threaded core-pulling assembly performs threaded core-pulling demolding, and then the product can be demolded as a whole. The overall demolding can be done manually or automatically by setting an ejector pin assembly on the rear mold assembly, thus completing a single injection. Compared with the general mold setting of one slider connecting one core rod, this mold uses one first slider to connect multiple transverse core rods at the same time, saving internal mold space, improving space utilization, and thus increasing the number of mold cavities in the mold. In a mold of the same volume, this mold has more mold cavities, and more products can be injected in a single injection, improving production efficiency and reducing mold usage costs.

[0006] Preferably, the transverse core-pulling assembly further includes a second slider detachably connected to the first slider. The second slider has at least two oblique through holes and is connected to a plurality of transverse core rods. The second slider is slidably connected to the rear template.

[0007] A second slider is provided to further increase the number of mold cavities. The longer the slider, the more difficult it is to control its overall deformation and surface flatness during manufacturing. The second slider is detachably connected to the first slider, which facilitates control over the manufacturing lengths of both sliders, improves surface flatness, enhances overall smoothness, and prevents a single first slider from simultaneously driving too many transverse core rods, thus avoiding slippage. Furthermore, the second slider and the first slider are connected by a snap-fit ​​mechanism.

[0008] Preferably, the second slider end is provided with a first pushing slope, and the front template is provided with a second pushing slope, and the first pushing slope abuts against the second pushing slope when the mold is closed.

[0009] The first and second push-in inclined surfaces work together to abut against each other when the mold is closed, thereby assisting the second slider to reset and fully ensuring the mold closing accuracy of the transverse core rod. After the mold is closed, the second push-in inclined surface also abuts against the first push-in inclined surface to prevent the second slider from moving during injection molding.

[0010] Preferably, the outer surfaces of the first slider and the second slider are each provided with a first protrusion, and one end of the inner surface of the second slider is provided with a second protrusion. The rear template is respectively connected with a first pressing block and a second pressing block for pressing down the first protrusion and the second protrusion. The second protrusion and the second pressing block are arranged next to the first boosting inclined surface.

[0011] The first pressure block is used to press down the first protrusion on the first slider and the second slider respectively, thereby restricting the degree of freedom of the first slider and the second slider and preventing the first slider and the second slider from shaking. At the same time, a second protrusion is provided on one side of the second slider near the first push slope to further restrict the second slider and ensure that the second slider moves smoothly.

[0012] Preferably, the transverse core-pulling assembly further includes mounting blocks that are detachably connected to the first slider or the second slider, and the transverse core rods are respectively disposed on the mounting blocks.

[0013] The transverse core rods are respectively mounted on the mounting blocks, which are detachably connected to the first or second slider, thus facilitating the installation and replacement of the transverse core rods. This also makes it easier to replace transverse core rods with different cavity surfaces, making it suitable for injection molding of more similar products.

[0014] Preferably, the mounting block is provided with a third pushing inclined surface, and the front template is provided with a fourth pushing inclined surface, and the third pushing inclined surface abuts against the fourth pushing inclined surface when the mold is closed.

[0015] The third booster ramp is set on the mounting block. When the mold is closed, the third booster ramp abuts against the fourth booster ramp, thereby further ensuring that the transverse core rod can be accurately reset and can remain in the set position during injection molding without moving.

[0016] Preferably, the transverse core-pulling assembly further includes a crossbar sequentially passing through the mounting block and the transverse core rod, the crossbar being perpendicular to the core-pulling direction of the transverse core rod.

[0017] The crossbar passes through or is embedded in the mounting block, and also passes through the transverse core rod, thereby effectively preventing the transverse core rod from shaking or shifting with the mounting block, ensuring the stability of the transverse core rod's position, and ensuring the mold closing accuracy of the transverse core rod.

[0018] Preferably, the rear template is provided with multiple limiting grooves, and the mounting blocks are respectively disposed in the limiting grooves and slidably connected with the limiting grooves.

[0019] The limiting groove is used to restrict the movement of the mounting block, further improving the mold closing accuracy of the transverse core rod.

[0020] Preferably, the front mold assembly further includes a cooling block detachably connected to the front template and a water channel interface. The bottom of the cooling block is provided with a cavity surface. The front template and the interior of the cooling block are respectively provided with interconnected cooling water channels. The water channel interface is connected to the cooling water channels and is disposed on the side of the front template.

[0021] The bottom of the cooling block has a cavity surface, which participates in the product molding and is also used to connect cooling water to cool the product. The cooling block is detachably connected to the front template, which facilitates the setting and processing of the cavity surface and cooling water channels.

[0022] Preferably, the threaded core-pulling assembly includes a hydraulic motor connected to the front template, a power gear mounted on the output shaft of the hydraulic motor, a plurality of transmission gears directly or indirectly meshing with the power gear, a plurality of drive gears meshing with the transmission gears, and a threaded core rod axially slidably connected to the drive gear. The drive gear shaft is provided with a spline groove, the threaded core rod is slidably connected to the drive gear through a spline, the end of the threaded core rod is provided with a threaded portion, and the number of threaded core rods is the same as the number of transverse core rods.

[0023] The hydraulic motor drives the power gear to rotate, which in turn drives the transmission gear and the drive gear to rotate. This, in turn, causes the drive gear to rotate the threaded core rod. During demolding, the drive gear drives the threaded core rod to rotate, causing the threaded core rod to retract relative to the product, thus achieving demolding.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] At least two first sliders are provided, and each first slider is connected to multiple transverse core rods. By using a single first slider to drive multiple transverse core rods to move, the structure is simplified. At least two oblique through holes are also provided on the first slider, and at least two oblique guide pillars are used to drive the first slider to move. Under the same spatial volume, more mold cavities can be set in the mold, so that more products can be produced in a single injection, reducing the mold use cost and improving product production efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a multi-cavity threaded core-pulling mold according to this utility model;

[0027] Figure 2 This is a schematic diagram of the mating structure of the threaded core-pulling assembly and the transverse core-pulling assembly of a multi-cavity threaded core-pulling mold according to this utility model.

[0028] Figure 3 This is a schematic diagram of the top structure of the rear template of a multi-cavity threaded core-pulling mold according to this utility model;

[0029] Figure 4 This is a schematic diagram of the transverse core-pulling assembly structure of a multi-cavity threaded core-pulling mold according to this utility model;

[0030] Figure 5 This is a schematic diagram of the bottom structure of the front template of a multi-cavity threaded core-pulling mold according to this utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the first and second sliders of a multi-cavity threaded core-pulling mold according to this utility model;

[0032] Figure 7 This is a schematic diagram of the internal structure of a multi-cavity threaded core-pulling mold according to this utility model.

[0033] In the picture:

[0034] 1. Front mold assembly; 101. Front template; 1011. Second booster ramp; 1012. Fourth booster ramp; 102. Angled guide post; 103. Cooling block; 104. Water channel interface;

[0035] 2. Rear mold assembly; 201. Rear template; 2011. Limiting groove;

[0036] 3. Threaded core-pulling assembly; 301. Hydraulic motor; 302. Power gear; 303. Transmission gear; 304. Drive gear; 305. Threaded core rod;

[0037] 4. Horizontal core-pulling assembly; 401. First slider; 4011. Angled through hole; 402. Horizontal core rod; 403. Second slider; 4031. First boosting inclined surface; 404. First protrusion; 405. Second protrusion; 406. First pressure block; 407. Second pressure block; 408. Mounting block; 4081. Third boosting inclined surface; 409. Crossbar;

[0038] 5. Thermally conductive copper sleeve; 6. Ejector plate; 7. Ejector pin; 8. Return spring. Detailed Implementation

[0039] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0040] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0041] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0042] Example 1

[0043] like Figure 1-2As shown, a multi-cavity threaded core-pulling mold includes a front mold assembly 1, a rear mold assembly 2 slidably connected to the front mold assembly 1, a threaded core-pulling assembly 3 connected to the rear mold assembly 2, and a transverse core-pulling assembly 4 connected to the rear mold assembly 2. The rear mold assembly 2 includes a rear template 201. The transverse core-pulling assembly 4 includes at least two first sliders 401 slidably connected to the rear template 201 and a plurality of transverse core rods 402 slidably connected to the first sliders 401. The front mold assembly 1 includes a front template 101 and a plurality of inclined guide posts 102 slidably connected to the front template 101. Each first slider 401 is provided with at least two inclined through holes 4011. The inclined guide posts 102 are slidably connected to the inclined through holes 4011 and drive the first sliders 401 to slide in a set direction. The core-pulling direction of the transverse core rods 402 is consistent with the sliding direction of the first sliders 401. The front template 101 and the rear template 201 are respectively provided with a plurality of cavity surfaces.

[0044] The front mold assembly 1 is mounted on the external injection molding machine barrel, and the rear mold assembly 2 is mounted on the external injection molding machine. The threaded core-pulling assembly 3 is mounted in the rear mold assembly 2 to form the internal threads of the product and to perform core-pulling demolding. In addition, a transverse core-pulling assembly 4 is provided for forming through holes or slots in other parts of the product. Specifically, the first slider 401 in the transverse core-pulling assembly 4 is slidably connected to the front mold plate 101, and multiple transverse core rods 402 are connected to the first slider 401. The transverse core rods 402 participate in the injection molding of the product, and their surfaces have cavity surfaces. Their number corresponds to the number of mold cavities. Consistent; the transverse core rod 402 is pulled out of the mold by the movement of the first slider 401. The first slider 401 is provided with a slanted through hole 4011. The front mold plate 101 of the front mold assembly 1 is connected with a slanted guide post 102. When the mold is opened, the slanted guide post 102 abuts against the slanted through hole 4011 and slides relative to it. During the process, it drives the first slider 401 to slide. Its sliding direction is consistent with the demolding direction of the transverse core rod 402, thereby realizing demolding. In order to ensure the smooth sliding of the first slider 401, at least two slanted through holes 4011 are provided on the first slider 401. The number of slanted guide posts 102 corresponds to the number of slanted through holes 4011. During demolding, the first slider 401 is ensured to slide smoothly. In actual operation, the plastic raw material in the injection molding machine enters the injection cavity of the mold through the injection barrel and the front mold assembly 1. The mold cavity is formed by the cavities on the front mold plate 101 and the rear mold plate 201, the working end of the threaded core pulling assembly 3, and the working surface of the transverse core rod 402. After injection molding, the front mold assembly 1 remains stationary, while the rear mold assembly 2 moves and opens under the drive of the injection molding machine. During this process, the first slider 401 drives the transverse core rod 402 to move and demold under the action of the inclined guide post 102. After the transverse core rod 402 is demolded and reset, the threaded core pulling assembly 3... The core assembly 3 is threaded and pulled for demolding, and then the product can be demolded as a whole. Demolding can be done manually or automatically by setting an ejector pin assembly on the rear mold assembly 2, thus completing a single injection molding. Compared with the general mold setting of one slider connecting one core rod, this mold uses one first slider 401 to connect multiple transverse core rods 402 at the same time, saving internal mold space, improving space utilization, and thus increasing the number of mold cavities. In the same volume mold, this mold has more mold cavities, and more products can be injected in a single injection, improving production efficiency and reducing mold use costs.

[0045] The beneficial effects of this embodiment are as follows: At least two first sliders 401 are provided, and each first slider 401 is connected to multiple transverse core rods 402. By using a single first slider 401 to drive multiple transverse core rods 402 to move, the structure is simplified. At least two oblique through holes 4011 are also provided on the first slider 401, and at least two oblique guide posts 102 are used to drive the first slider 401 to move. Under the same spatial volume, more mold cavities can be set in the mold, so that the mold can produce more products in a single injection, reduce the mold use cost, and improve product production efficiency.

[0046] Example 2

[0047] The difference between Example 1 and Example 2 is as follows:

[0048] like Figure 2-4 As shown, the transverse core-pulling assembly 4 also includes a second slider 403 detachably connected to the first slider 401. The second slider 403 has at least two oblique through holes 4011 and is connected to multiple transverse core rods 402. The second slider 403 is slidably connected to the rear template 201. Figure 5 As shown, the second slider 403 has a first pushing slope 4031 at its end, and the front mold plate 101 has a second pushing slope 1011. When the mold is closed, the first pushing slope 4031 abuts against the second pushing slope 1011. Figure 2 , Figure 5 and Figure 6 As shown, the outer surfaces of the first slider 401 and the second slider 403 are each provided with a first protrusion 404, and one end of the inner surface of the second slider 403 is provided with a second protrusion 405. The rear template 201 is respectively connected with a first pressing block 406 and a second pressing block 407 for pressing down the first protrusion 404 and the second protrusion 405. The second protrusion 405 and the second pressing block 407 are located next to the first boosting inclined surface 4031. Figure 2-4 As shown, the transverse core-pulling assembly 4 also includes mounting blocks 408 that are detachably connected to the first slider 401 or the second slider 403, respectively, and the transverse core rods 402 are respectively disposed on the mounting blocks 408. Figure 2 and Figure 5 As shown, the mounting block 408 is provided with a third pusher slope 4081, and the front template 101 is provided with a fourth pusher slope 1012. When the mold is closed, the third pusher slope 4081 and the fourth pusher slope 1012 abut against each other.

[0049] A second slider 403 is provided to further increase the number of mold cavities. The longer the slider, the more difficult it is to control its overall deformation and surface flatness during manufacturing. The second slider 403 is detachably connected to the first slider 401, which facilitates control over the manufacturing lengths of both sliders, improves surface flatness, and enhances overall smoothness. This prevents a single first slider 401 from simultaneously driving too many transverse core rods 402, which could lead to slippage. Furthermore, the second slider 403 and the first slider 401 are connected by a snap-fit ​​mechanism. The first and second pusher ramps 4031 and 1011 cooperate to abut against each other during mold closing, thereby assisting the second slider 403 in resetting and ensuring the mold closing accuracy of the transverse core rod 402. After mold closing, the second pusher ramp 1011 continues to abut against the first pusher ramp 4031 to prevent the second slider 403 from moving during injection molding. The first pressure block 406 is used to press down the first protrusions 404 on the first slider 401 and the second slider 403 respectively, thereby restricting the degree of freedom of the first slider 401 and the second slider 403 and preventing them from shaking. At the same time, a second protrusion 405 is also provided on the side of the second slider 403 near the first pusher ramp 4031 to further restrict the second slider 403 and ensure smooth movement of the second slider 403. The transverse core rods 402 are respectively mounted on the mounting blocks 408, which are detachably connected to the first slider 401 or the second slider 403, thus facilitating the installation and replacement of the transverse core rods 402. This also allows for the replacement of transverse core rods 402 with different cavity surfaces, making them suitable for injection molding of more similar products. The third push-up slope 4081 is mounted on the mounting block 408. During mold closing, the third push-up slope 4081 abuts against the fourth push-up slope 1012, further ensuring that the transverse core rods 402 can be accurately reset and remain in the set position during injection molding without moving.

[0050] The remaining features and working principles of this embodiment are the same as those of Embodiment 1.

[0051] Example 3

[0052] Based on Example 1 or Example 2, Example 1 or Example 2 are further defined, with the following differences:

[0053] like Figure 2 and Figure 4As shown, the transverse core-pulling assembly 4 also includes a horizontal bar 409 sequentially passing through the mounting block 408 and the transverse core rod 402, with the horizontal bar 409 being perpendicular to the core-pulling direction of the transverse core rod 402. The rear template 201 is provided with multiple limiting grooves 2011, and the mounting block 408 is respectively disposed within the limiting grooves 2011 and slidably connected to them. Figure 1-4 As shown, the front mold assembly 1 also includes a cooling block 103 detachably connected to the front template 101, and a water channel interface 104. The bottom of the cooling block 103 has a cavity surface, and the front template 101 and the cooling block 103 are respectively provided with interconnected cooling water channels. The water channel interface 104 is connected to the cooling water channels and is located on the side of the front template 101. Figure 1 , Figure 2 and Figure 7 As shown, the threaded core-pulling assembly 3 includes a hydraulic motor 301 connected to the front template 101, a power gear 302 mounted on the output shaft of the hydraulic motor 301, a plurality of transmission gears 303 directly or indirectly meshing with the power gear 302, a plurality of drive gears 304 meshing with the transmission gears 303, and a threaded core rod 305 axially slidably connected to the drive gears 304. The drive gear 304 has a spline groove at its shaft center, and the threaded core rod 305 is slidably connected to the drive gear 304 through a spline. The end of the threaded core rod 305 has a threaded portion, and the number of threaded core rods 305 is the same as the number of transverse core rods 402.

[0054] The crossbar 409 passes through or is embedded in the mounting block 408, and also passes through the transverse core rod 402, thus effectively preventing the transverse core rod 402 from shaking or shifting with the mounting block 408, ensuring the stability of the transverse core rod 402's position, and guaranteeing the mold closing accuracy of the transverse core rod 402. The limiting groove 2011 is used to limit the movement of the mounting block 408, further improving the mold closing accuracy of the transverse core rod 402. The bottom of the cooling block 103 has a cavity surface, which participates in the product molding and is also used to connect cooling water to cool the product. The cooling block 103 is detachably connected to the front template 101, which facilitates the setting and processing of the cavity surface and cooling water channels. The hydraulic motor 301 drives the power gear 302 to rotate, which in turn drives the transmission gear 303 and the drive gear 304 to rotate, which in turn causes the drive gear 304 to drive the threaded core rod 305 to rotate. During demolding, the drive gear 304 drives the threaded core rod 305 to rotate, and the threaded core rod 305 retracts relative to the product, thus achieving demolding.

[0055] like Figure 7As shown, further, a heat-conducting copper sleeve 5 is fitted on one end of the threaded core rod 305 near the threaded portion to facilitate heat dissipation and prevent the internal threads of the product from being burned. Furthermore, the rear mold plate 201 is also slidably connected to an ejector plate 6, which is connected to an ejector pin 7. The ejector pin 7 is slidably connected to the rear mold plate 201, and a return spring 8 is provided between the ejector plate 6 and the rear mold plate 201. The ejector plate 6 is connected to the ejection structure of an external injection molding machine. The ejection mechanism drives the ejector plate 6 and the ejector pin 7 to move together, thereby ejecting the product. Then, the return spring 8 resets the ejector plate 6 and the ejector pin 7, thus achieving automatic demolding of the product. In this embodiment, one end of the threaded core rod 305 is restricted by the ejector plate 6, and the threaded core rod 305 can rotate relative to the ejector plate 6. When the ejector plate 6 ejects, it also ejects the threaded core rod 305. Then, the threaded core rod 305 rotates, ejecting the product.

[0056] The remaining working principles and processes of this embodiment are the same as those of Embodiment 1 or Embodiment 2.

[0057] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0058] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A multi-cavity threaded core-pulling mold, comprising a front mold assembly (1), a rear mold assembly (2) slidably connected to the front mold assembly (1), and a threaded core-pulling assembly (3) connected to the rear mold assembly (2), characterized in that, It also includes a transverse core-pulling assembly (4) connected to the rear mold assembly (2). The rear mold assembly (2) includes a rear template (201). The transverse core-pulling assembly (4) includes at least two first sliders (401) that are slidably connected to the rear template (201) and a plurality of transverse core rods (402) that are slidably connected to the first sliders (401). The front mold assembly (1) includes a front template (101) and a plurality of oblique guide posts (102) that are slidably connected to the front template (101). Each first slider (401) is provided with at least two oblique through holes (4011). The oblique guide post (102) is slidably connected to the oblique through holes (4011) and drives the first slider (401) to slide in a set direction. The core-pulling direction of the transverse core rod (402) is consistent with the sliding direction of the first slider (401). The front template (101) and the rear template (201) are respectively provided with a plurality of cavity surfaces.

2. The multi-cavity threaded core-pulling mold according to claim 1, characterized in that: The transverse core-pulling assembly (4) further includes a second slider (403) detachably connected to the first slider (401). The second slider (403) is provided with at least two oblique through holes (4011) and connected to a plurality of transverse core rods (402). The second slider (403) is slidably connected to the rear template (201).

3. A multi-cavity threaded core-pulling mold according to claim 2, characterized in that: The second slider (403) has a first push-in inclined surface (4031) at its end, and the front template (101) has a second push-in inclined surface (1011). When the mold is closed, the first push-in inclined surface (4031) abuts against the second push-in inclined surface (1011).

4. A multi-cavity threaded core-pulling mold according to claim 3, characterized in that: The outer surfaces of the first slider (401) and the second slider (403) are respectively provided with a first protrusion (404), and one end of the inner surface of the second slider (403) is provided with a second protrusion (405). The rear template (201) is respectively connected with a first pressing block (406) and a second pressing block (407) for pressing the first protrusion (404) and the second protrusion (405). The second protrusion (405) and the second pressing block (407) are arranged next to the first boosting inclined surface (4031).

5. A multi-cavity threaded core-pulling mold according to claim 2, characterized in that: The transverse core-pulling assembly (4) further includes mounting blocks (408) that are detachably connected to the first slider (401) or the second slider (403), respectively, and the transverse core rods (402) are respectively disposed on the mounting blocks (408).

6. A multi-cavity threaded core-pulling mold according to claim 5, characterized in that: The mounting block (408) is provided with a third boosting inclined surface (4081), and the front template (101) is provided with a fourth boosting inclined surface (1012). When the mold is closed, the third boosting inclined surface (4081) and the fourth boosting inclined surface (1012) abut against each other.

7. A multi-cavity threaded core-pulling mold according to claim 5, characterized in that: The transverse core-pulling assembly (4) further includes a crossbar (409) that is sequentially inserted through the mounting block (408) and the transverse core rod (402), and the crossbar (409) is perpendicular to the core-pulling direction of the transverse core rod (402).

8. A multi-cavity threaded core-pulling mold according to claim 5, characterized in that: The rear template (201) is provided with a plurality of limiting grooves (2011), and the mounting block (408) is respectively disposed in the limiting grooves (2011) and slidably connected to the limiting grooves (2011).

9. A multi-cavity threaded core-pulling mold according to claim 1, characterized in that: The front mold assembly (1) also includes a cooling block (103) detachably connected to the front template (101) and a water channel interface (104). The bottom of the cooling block (103) is provided with a cavity surface. The front template (101) and the cooling block (103) are respectively provided with interconnected cooling water channels. The water channel interface (104) is connected to the cooling water channels and is provided on the side of the front template (101).

10. A multi-cavity threaded core-pulling mold according to claim 1, characterized in that: The threaded core-pulling assembly (3) includes a hydraulic motor (301) connected to the front template (101), a power gear (302) mounted on the output shaft of the hydraulic motor (301), a plurality of transmission gears (303) directly or indirectly meshing with the power gear (302), a plurality of drive gears (304) meshing with the transmission gears (303), and a threaded core rod (305) axially slidably connected to the drive gear (304). The drive gear (304) has a spline groove at its shaft center. The threaded core rod (305) is slidably connected to the drive gear (304) through a spline. The end of the threaded core rod (305) has a threaded portion. The number of threaded core rods (305) is the same as the number of transverse core rods (402).

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