CN212579107U

CN212579107U - Die set

Info

Publication number: CN212579107U
Application number: CN202020934660.8U
Authority: CN
Inventors: 雷桂斌; 苏荣飞; 李博; 邓伟; 晏升福; 潘小林
Original assignee: Shenzhen Romoss Technology Co Ltd
Current assignee: Shenzhen Romoss Technology Co Ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2021-02-23
Anticipated expiration: 2030-05-28

Abstract

The utility model relates to a mold, which comprises a housin, glue injection hole, first runner, second runner and cooling well have been seted up on the casing, glue injection hole, first runner and the shaping of second runner three are before hardening treatment the casing, the cooling well shaping is after hardening treatment the casing with first runner with second runner tip between them communicates each other, first runner, second runner and cooling well three are used for the heat of discharging. And the flow separation component is positioned in the cooling well and divides the cooling well into a first cavity and a second cavity, the first cavity is communicated with the first flow channel, the second cavity is communicated with the second flow channel, the flow separation component is provided with a water through hole communicated with the first cavity and the second cavity, and the water through hole is closer to the glue injection hole relative to the first flow channel and the second flow channel. Thus, the processing efficiency of the die can be improved, and the production cost can be reduced.

Description

Die set

Technical Field

The utility model relates to the technical field of mold, especially, relate to a mold.

Background

When a mobile power product is solidified and molded in a mold cavity, a cooling runner is usually arranged in the mold, and then water flow is injected into the cooling runner to absorb heat in the mold cavity so that the product is cooled and solidified. At present, a plurality of mobile power supply products adopt a 'short, flat and fast' research and development mode, and in the research and development process of high strength and fast pace, the redesign work of completely changing or partially improving the products after the die is shaped is not avoided, so that the redesigned products have higher requirements on cooling speed and temperature.

For the traditional processing method, a design mode that a cooling flow channel is newly added in a mold to meet the requirement of high cooling speed is usually adopted, however, because the cooling flow channel is a slender pipeline and the mold is already hardened, the newly added cooling flow channel is difficult to be rapidly processed by adopting a common CNC processing mode. Or the newly added cooling flow channel is processed by adopting an electric spark processing mode, but the electric spark processing mode has long processing time and is relatively complex, so that the product and the manufacturing cost of the product are undoubtedly influenced. Or the product with higher temperature is cooled by adopting a mode of prolonging the cooling time on the basis of the existing cooling flow channel, but the production cycle is prolonged to influence the productivity, and the molding quality of the product is also influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem be how to improve the machining efficiency and the reduction in production cost of mould.

A mold, comprising:

the cooling well is formed on the hardened shell and communicated with the end parts of the first flow passage and the second flow passage, and the first flow passage, the second flow passage and the cooling well are used for discharging heat; and

the flow separation assembly is positioned in the cooling well and divides the cooling well into a first cavity and a second cavity, the first cavity is communicated with the first flow channel, the second cavity is communicated with the second flow channel, the flow separation assembly is provided with a water passing hole communicated with the first cavity and the second cavity, and the water passing hole is closer to the glue injection hole relative to the first flow channel and the second flow channel.

In one embodiment, the cross-sectional dimensions of the cooling well are each greater than the cross-sectional dimensions of both the first and second flow passages.

In one embodiment, the cross-sectional dimension of the cooling well is not less than 16 mm.

In one embodiment, the housing has a bottom wall bounding the cooling well portion, and the water through holes are disposed proximate the bottom wall.

In one embodiment, the end of the flow isolating assembly abutting against the bottom wall is provided with a notch, and the shell closes the notch to form the water through hole.

In one embodiment, the housing has a top surface, a first side surface and a second side surface, the first side surface and the second side surface are oppositely arranged, the top surface is connected between the first side surface and the second side surface, the cooling well and the glue injection hole are both arranged on the top surface, the end of the first flow channel penetrates through the first side surface, and the end of the second flow channel penetrates through the second side surface.

In one embodiment, the first flow passage and the second flow passage are both the same size and are coaxially arranged, and the central axes of the first flow passage and the second flow passage are perpendicular to the central axis of the cooling well.

In one embodiment, the cross section of the cooling well is circular, oval or regular polygon.

In one embodiment, the flow isolating assembly comprises a partition plate, a blocking head and a sealing piece, the blocking head is abutted to the partition plate and divides the cooling well into a first cavity and a second cavity, the water through holes are formed in the partition plate, and the sealing piece is used for sealing the cooling well.

In one embodiment, the cooling well comprises a first mounting hole and a second mounting hole which are coaxially arranged, the cross-sectional dimension of the first mounting hole is larger than that of the second mounting hole, the partition plate is located in the second mounting hole, the plugging head is matched with the second mounting hole and penetrates through the first mounting hole, the shell is provided with a step surface located between the first mounting hole and the second mounting hole, the step surface is used for bearing the sealing element, and the sealing element is arranged around the plugging head and is pressed between the plugging head and the shell.

The utility model discloses a technical effect of an embodiment is: the glue injection hole, the first flow passage and the second flow passage are formed in the shell before hardening, and the cooling well is formed in the shell after hardening. The mold is a new mold formed by modifying an original hardened mold, namely machining a cooling well on the original hardened mold and arranging a flow isolating assembly to modify the formed new mold. The flow separation component separates the cooling well into a first cavity and a second cavity, the first cavity is communicated with the first flow channel, the second cavity is communicated with the second flow channel, a water hole is formed in the separation component, the water hole is closer to the glue injection hole relative to the first flow channel and the second flow channel, when water with lower temperature enters the first flow channel and flows through the first cavity in sequence, the water hole and the second cavity flow out of the second flow channel after absorbing heat, the heat close to the glue injection hole with higher temperature can be quickly discharged, the heat dissipation effect of a new mold is improved, and compared with a flow channel which is directly newly added on an original hardened mold, the improvement scheme can be quickly realized through a conventional machining process, so that the machining efficiency of mold improvement is improved, and the manufacturing cost is reduced.

Drawings

Fig. 1 is a schematic perspective view of a mold according to an embodiment;

FIG. 2 is an exploded view of the mold shown in FIG. 1;

FIG. 3 is a perspective schematic view of the mold shown in FIG. 1;

FIG. 4 is an enlarged view of the mold shown in FIG. A;

FIG. 5 is a cross-sectional side view of the mold of FIG. 1;

fig. 6 is a schematic longitudinal perspective sectional structure view of the mold shown in fig. 1.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "inner", "outer", "left", "right" and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Referring to fig. 1, a mold 10 according to an embodiment of the present invention is used for injection molding of products such as a mobile power source, that is, injecting a molten injection into a cavity of the mold 10, and then cooling the injection in the cavity to solidify the injection to form a desired product. The mold 10 includes a shell 100 and a flow barrier assembly 200.

Referring to fig. 1, in some embodiments, the housing 100 has a first side 101, a second side 102, and a top 103. The top surface 103, the first side surface 101, and the second side surface 102 may all be planar shapes, but may also be curved surfaces. Both the first side 101 and the second side 102 may have the same shape and be oppositely disposed, that is, the first side 101 and the second side 102 are parallel and spaced apart in the width direction of the housing 100. The top surface 103 is connected between the first side surface 101 and the second side surface 102, both the first side surface 101 and the second side surface 102 are located on the same side of the top surface 103, one end of the top surface 103 is connected to an end (upper end) of the first side surface 101, and the other end of the top surface 103 is connected to an end (upper end) of the second side surface 102.

Glue injection hole 110 and cooling well 130 have been seted up to the top surface 103 of casing 100, and glue injection hole 110 and cooling well 130 both extend along vertical direction, and glue injection hole 110 is sunken along the thickness direction (vertical direction) of casing 100 by a part of top surface 103 and forms promptly, and glue injection hole 110 communicates with the die cavity of mould 10, and the molten injection liquid can be injected into the die cavity of mould 10 through this glue injection hole 110 promptly. The cooling well 130 is also formed by a portion of the top surface 103 being recessed in the thickness direction (vertical direction) of the housing 100, and the glue injection holes 110 and the cooling well 130 are spaced apart from each other on the top surface 103 and are not communicated with each other. The cross-sectional size of the glue injection hole 110 is relatively large, the cross-sectional size of the glue injection hole 110 is not less than 16mm, for example, the specific value of the cross-sectional size of the glue injection hole 110 may be 16mm, 17mm, 18mm or 20 mm. The cross-sectional dimension of the cooling well 130 may be circular, elliptical, or regular polygonal.

Referring to fig. 2, 3 and 4, in some embodiments, the cooling well 130 is a stepped bore, the cooling well 130 includes a first mounting hole 131 and a second mounting hole 132, the first mounting hole 131 and the second mounting hole 132 are coaxially disposed, the first mounting hole 131 is disposed closer to the top surface 103 than the second mounting hole 132, a cross-sectional dimension of the first mounting hole 131 is larger than a cross-sectional dimension of the second mounting hole 132, and the housing 100 has a stepped surface 133, and the stepped surface 133 is horizontally disposed and located at a boundary between the first mounting hole 131 and the second mounting hole 132.

Referring to fig. 5, the housing 100 is further provided with a first flow channel 121 and a second flow channel 122, the first flow channel 121 is provided on the first side surface 101, and the first flow channel 121 is formed by a portion of the first side surface 101 being recessed along a width direction (horizontal direction) of the housing 100, so that the first flow channel 121 extends along the horizontal direction. In other words, one end of the first flow channel 121 penetrates the first side surface 101 to communicate with the outside, and the other end of the first flow channel 121 communicates with the cooling well 130. The cross section of the first flow channel 121 may be circular, elliptical or regular polygonal, i.e., the first flow channel 121 may be a circular hole, an elliptical hole or a regular polygonal hole. The cross-sectional dimension of the first flow channel 121 is smaller than the cross-sectional dimension of the cooling hole, and the cross-sectional dimension of the first flow channel 121 is not higher than 10mm, for example, the cross-sectional dimension of the first flow channel 121 is 7mm, 8mm, 9mm, or 10 mm.

Referring to fig. 5, the second flow channel 122 is opened on the second side surface 102, and the second flow channel 122 is formed by a portion of the second side surface 102 being recessed along a width direction (horizontal transverse direction) of the housing 100, such that the second flow channel 122 extends along the horizontal direction. In other words, one end of the second flow channel 122 penetrates the second side surface 102 to communicate with the outside, and the other end of the second flow channel 122 communicates with the cooling well 130. The cross section of the second flow passage 122 may be circular, elliptical or regular polygonal, i.e., the second flow passage 122 may be a circular hole, an elliptical hole or a regular polygonal hole. The cross-sectional dimension of the second flow passage 122 is smaller than that of the cooling hole, and the cross-sectional dimension of the second flow passage 122 is not higher than 10mm, for example, the cross-sectional dimension of the second flow passage 122 is 7mm, 8mm, 9mm, or 10mm, etc.

Both the first flow channel 121 and the second flow channel 122 may be coaxially disposed, and at the same time, both the first flow channel 121 and the second flow channel 122 may have the same cross-sectional size. The cooling well 130 is located between the first flow passage 121 and the second flow passage 122, that is, both ends of the first flow passage 121 and the second flow passage 122 located in the housing 100 are simultaneously communicated with the cooling well 130. Since the central axes of both the first flow channel 121 and the second flow channel 122 are horizontally disposed and the central axis of the cooling well 130 is vertically disposed, the central axes of both the first flow channel 121 and the second flow channel 122 are perpendicular to the central axis of the cooling well 130.

When water is injected from the first flow passage 121, the water flows into the second flow passage 122 through the cooling well 130 and finally flows out of the second flow passage 122, and when the water flows in the first flow passage 121, the second flow passage 122 and the cooling well 130, the heat in the cavity of the mold 10 is absorbed to cool and solidify the molten injection liquid. That is, after the water with a lower temperature enters from the first flow channel 121, the water absorbs the heat in the cavity of the mold 10 and flows out from the second flow channel 122, so as to achieve the purpose of cooling, solidifying and molding the molten injection.

Referring to fig. 4, 5 and 6, in some embodiments, the flow blocking assembly 200 includes a partition 210, a blocking head 220 and a sealing member 230, the partition 210 is substantially in a plate-like structure, the partition 210 is located in the second installation hole 132 of the cooling well 130, the housing 100 has a bottom wall defining part of the second installation hole 132, a lower end of the partition 210 abuts against the bottom wall, an upper end of the partition 210 abuts against the blocking head 220, and the blocking head 220 may be made of a metal material, for example, the blocking head 220 is made of copper. The lower end of the plugging head 220 is engaged with the second mounting hole 132, for example, the plugging head 220 is in a clearance fit relationship with the second mounting hole 132. Both the blocking head 220 and the partition 210 divide the second mounting hole 132 into a first cavity 133 and a second cavity 134, the first cavity 133 communicates with the first flow passage 121, and the second cavity 134 communicates with the second flow passage 122.

The partition 210 is provided with a water through hole 211a, the water through hole 211a is closer to the glue injection hole 110 than the first flow channel 121 and the second flow channel 122, and the water through hole 211a is disposed close to the bottom wall. Specifically, a notch 211 is opened at an end of the partition plate 210 abutting against the bottom wall, and the case 100 closes the notch 211 to form a water passing hole 211 a. The first and

second cavities

133 and 134 are communicated with each other by providing the water passing holes 211a on the partition 210. That is, the water flows out from the second flow channel 122 after passing through the first flow channel 121, the first cavity 133, the water passing hole 211a and the second cavity 134 in sequence, thereby cooling and solidifying the molten injection.

In some embodiments, since the lower end of the plugging head 220 is engaged with the second mounting hole 132, the upper end of the plugging head 220 may be inserted into the first mounting hole 131. The shape of the plugging head 220 is matched with the shape of the second mounting hole 132, so that the cross-sectional dimension of the plugging head 220 is smaller than that of the first mounting hole 131, so that the upper end of the plugging head 220 is inserted into the first mounting hole 131, and a gap exists between the plugging head 220 and the surrounding part of the housing 100. The sealing element 230 may be an O-ring, the sealing element 230 is supported on the step surface 133 and disposed around the plugging head 220, the step surface 133 performs a supporting and limiting function on the sealing element 230, an inner ring of the sealing element 230 is sleeved on the plugging head 220, and an outer ring of the sealing element 230 abuts against the housing 100, that is, the sealing element 230 abuts against a gap between the plugging head 220 and the housing 100. By providing the seal 230, a good sealing action is also provided against the cooling well 130, preventing water from escaping from the cooling well 130 under pressure. The sealing effect of the cooling well 130 is improved.

With the conventional mold 10, if the design of the product is changed, for example, in the case that the molten injection liquid needs to be cooled at a faster speed, since the temperature near the injection hole 110 is the highest, it is usually thought to add more runners 120 on the first side surface 101 and the second side surface 102 to change the mold 10, so that the mold 10 can meet the molding requirements of the product after the design change. Certainly, the newly added flow channels 120 are arranged close to the injection holes 110, so that after water is injected into the flow channels 120, the water in the flow channels 120 can quickly absorb heat near the positions of the injection holes 110, and the molten injection liquid near the positions of the injection holes 110 can be quickly cooled. However, since the casing 100 is hardened and the cross-sectional size of the runner 120 is generally small and the extension length is large, when the runner 120 with the small cross-sectional size and the large length is machined on the hardened casing 100 by using a common CNC machining method, the difficulty is so great that it is impossible to machine the runner 120. When the mold 10 cannot be changed due to the fact that the CNC method cannot process the runner 120, when the original mold 10 is still used for processing, the defects of deformation, matte appearance and the like caused by uneven cooling in the product forming process can be caused, and thus the quality of the product with changed design is inevitably damaged. When the electric spark machining mode is adopted to machine the runner 120 with a small cross section size and a large length, the electric spark machining mode is long in time, so that the machining efficiency of the die 10 is undoubtedly influenced, the machining efficiency of a product is further influenced, the product cannot meet related capacity requirements, the requirement of time to market of a new product after being seriously dragged is met, and the electric spark machining cost is high, so that the machining cost of the die 10 and the product is also increased. Moreover, to meet the requirement of productivity, a new set of mold 10 with a relatively increased number of runners 120 may be newly manufactured to process a new product with a changed design, which will undoubtedly increase the manufacturing cost of the mold 10 and the product.

For example, when it is necessary to cool a molten injection liquid having a relatively high temperature, if the number of runners 120 cannot be increased due to difficulty in processing, a product having a modified design can be produced by using the original mold 10. In this case, the cooling time of the product has to be extended, i.e. the production cycle of the product is extended, which also fails to meet the requirements of capacity and the marketing of new products.

With the mold 10 of the above embodiment, in fact, the mold 10 is a new mold formed by modifying (changing) the original mold, and the new mold 10 can completely meet the cooling requirement of the product with the changed design. Specifically, the method is described. The glue injection hole 110 and the runner 120 are formed in the casing 100 before the hardening treatment, that is, the hardened mold 10 is provided with the glue injection hole 110 and the runner 120, and when the original hardened mold 10 is modified, the hardened mold 10 is directly provided with the cooling well 130. Therefore, in the original mold 10, instead of adding the horizontally arranged small and long runner 120, the vertically arranged large and short cooling well 130 is added, and the cooling well 130 can cut off the runner 120 closest to the glue injection hole 110 into two sections, so as to divide the runner 120 into the first runner 121 and the second runner 122, and ensure that both the first runner 121 and the second runner 122 are simultaneously communicated with the cooling well 130. Meanwhile, the plugging head 220 and the partition plate 210 located in the second mounting hole 132 of the cooling well 130 divide the second mounting hole 132 into a first cavity 133 and a second cavity 134, and the partition plate 210 is provided with a water through hole 211a, the water through hole 211a is closer to the glue injecting hole 110 than the first flow channel 121 and the second flow channel 122, and water with lower temperature entering the first flow channel 121 flows through the first cavity 133, the water through hole 211a and the second cavity 134 in sequence to absorb heat and then flows out of the second flow channel 122, so that heat close to the glue injecting hole 110 with higher temperature is quickly discharged.

On one hand, the depth of the cooling well 130 is greatly reduced relative to the length of the single runner 120, so that the cooling well 130 can be rapidly machined on the hardened (hardened) shell 100 by a conventional CNC machining method, and the cross-sectional dimension of the cooling well 130 is not less than 16mm, so that the cross-sectional dimension of the cooling well 130 is larger than that of the single runner 120, that is, the cross-sectional dimension of the cooling well 130 is larger than that of the first runner 121 and that of the second runner 122, and thus the cooling well 130 is more easily rapidly machined and formed on the hardened mold 10 by the conventional CNC machining method, so that the modification (change) of the mold can not only become impossible, but also the modification efficiency of the mold can be improved and the modification cost of the mold 10 can be reduced.

On the other hand makes the relative first runner 121 and the second runner 122 of water hole 211a be closer to glue injection hole 110 more, compare with the mould before reforming transform, the rivers in the water hole 211a obviously are closer to glue injection hole 110 than the rivers in relative first runner 121 and the second runner 122, thereby make rivers can discharge the heat of injecting glue hole 110 department fast, so mould 10 after the transformation has higher radiating effect than original mould, make the product can cool off fast and solidification moulding, guarantee the production cycle of product, also prevent to lead to warping or produce defects such as inferior light in the outward appearance because of cooling is uneven in the product forming process, improve off-the-shelf shaping quality promptly. Therefore, compared with the modification scheme of adding the runner 120 close to the glue injection hole 110 on the original hardened mold, the embodiment adopts the modification scheme of arranging the water through hole 211a in the cooling well 130, and the processing efficiency and the manufacturing cost of mold modification can be obviously improved on the basis of ensuring the heat dissipation effect. Meanwhile, the water passing hole 211a is disposed near the bottom wall defining part of the boundary of the second mounting hole 132, in other words, the water passing hole 211a is disposed near the bottom of the second mounting hole 132, in the thickness direction of the housing 100, the first flow channel 121 and the second flow channel 122 are farther from the bottom of the second mounting hole 132 than the water passing hole 211a, in colloquial terms, both the first flow channel 121 and the second flow channel 122 are located above the water passing hole 211a, when water enters from the first flow channel 121, the water can flow at the bottom of the second mounting hole 132 in the process of passing through the water passing hole 211a, so as to avoid that "dead water" is formed at the bottom of the second mounting hole 132 due to slow flow speed or no flow, and finally, the heat at a position near the glue injection hole 110 where the temperature is higher can be discharged quickly.

On the other hand, because the sealing element 230 is supported on the step surface 133, the inner ring of the sealing element 230 is sleeved on the plugging head 220, and the outer ring of the sealing element 230 is pressed against the casing 100, the sealing element 230 is ensured to be pressed against the gap between the plugging head 220 and the casing 100 to seal the cooling well 130, so that the size of the sealing element 230 is prevented from being increased, and the cooling well 130 is enabled to be as close to the glue injection hole 110 as possible to ensure the heat dissipation effect of the modified mold 10. Meanwhile, the provision of the choke plug 220 and the sealing member 230 may avoid a modification of tapping on the cooling well 130, thereby preventing additional processing time and manufacturing costs resulting from tapping on a hardened mold.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A mold, comprising:

2. The mold of claim 1, wherein the cooling well has a cross-sectional dimension that is greater than a cross-sectional dimension of both the first flow passage and the second flow passage.

3. The mold of claim 2, wherein the cooling well has a cross-sectional dimension of no less than 16 mm.

4. The mold of claim 1, wherein the housing has a bottom wall bounding the cooling well portion, the water through holes being disposed proximate the bottom wall.

5. The mold of claim 4, wherein the end of the flow blocking assembly abutting the bottom wall is provided with a notch, and the housing closes the notch to form the water through hole.

6. The mold of claim 1, wherein the housing has a top surface, a first side surface and a second side surface, the first side surface and the second side surface being disposed opposite each other, the top surface being connected between the first side surface and the second side surface, the cooling well and the glue injection hole being disposed in the top surface, an end of the first flow channel extending through the first side surface, and an end of the second flow channel extending through the second side surface.

7. The mold of claim 1, wherein the first flow passage and the second flow passage are both the same size and are coaxially disposed, and wherein central axes of the first flow passage and the second flow passage are perpendicular to a central axis of the cooling well.

8. The mold of claim 1, wherein the cooling well has a cross-section that is circular, elliptical, or regular polygonal.

9. The mold according to claim 1, wherein the flow blocking assembly comprises a partition plate, a blocking head and a sealing member, the blocking head abuts against the partition plate and divides the cooling well into a first cavity and a second cavity, the water through holes are formed in the partition plate, and the sealing member is used for sealing the cooling well.

10. The mold according to claim 9, wherein the cooling well comprises a first mounting hole and a second mounting hole which are coaxially arranged, the cross-sectional dimension of the first mounting hole is larger than that of the second mounting hole, the partition plate is located in the second mounting hole, the plugging head is matched with the second mounting hole and penetrates through the first mounting hole, the shell is provided with a step surface located between the first mounting hole and the second mounting hole, the step surface is used for bearing the sealing element, and the sealing element is arranged around the plugging head and pressed between the plugging head and the shell.