Die structure without parting surface

Abstract

The utility model discloses a parting surface-free mould structure, which comprises a female mould and a male mould, the female mould comprises an upper fixing plate, a shifting plate and a female mould plate which are arranged in sequence, and the male mould comprises a male mould plate and a lower fixing seat which are arranged in sequence. A female mold core, a first side edge sliding block and a second side edge sliding block are arranged in the female mold plate, the first side edge sliding block and the second side edge sliding block are located above the female mold core, the first side edge sliding block and the second side edge sliding block correspond to the non-appearance face of a product, the female mold core corresponds to the appearance face of the product, and sliding block fixing blocks are arranged on the outer sides of the first side edge sliding block and the second side edge sliding block. An inclined channel is formed in the sliding block fixing block, the upper end of the driving block is connected with the fixing plate, and an inclined block capable of extending into the inclined channel is arranged at the lower end of the driving block; according to the structure, a sliding block structure is omitted at the position corresponding to the appearance surface of the product, and a sliding block structure is arranged on the non-appearance surface of the product, so that parting lines cannot be generated on the appearance surface of the product, and the polishing and grinding procedures are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mould field especially relates to a no parting line mould structure. BACKGROUND

[0002] The pen cover structure is a plastic product, which is injection molded by an injection mold. The pen cover structure includes a non-appearance surface structure of an upper half and an appearance surface structure of a lower half. When injection molding, the cavity is formed by a cavity forming plate, a lower mold plate, and two side cavities. Therefore, a parting line is formed on the appearance surface of the product after injection molding. Therefore, a polishing step is needed. However, the polishing step may cause the product to deform or have a corner collapse. Therefore, the current mold affects the yield of the product. SUMMARY

[0003] The utility model provides a no parting line mould structure which reduces cost and improves product quality.

[0004] The utility model discloses a no parting line mould structure which solves the technical problems. The no parting line mould structure comprises a female mold and a male mold. The female mold comprises an upper fixed plate, a material pushing plate, and a female mold plate arranged in sequence. The male mold comprises a male mold plate and a lower fixed seat arranged in sequence. A female mold core and first and second side sliding blocks above the female mold core are arranged in the female mold plate. A sliding channel for the first and second side sliding blocks to slide is arranged in the female mold plate. The first and second side sliding blocks correspond to the non-appearance surface of the product. The female mold core corresponds to the appearance surface of the product. A sliding block fixing block is arranged outside the first and second side sliding blocks. An inclined channel is arranged in the sliding block fixing block. A driving block is arranged. The upper end of the driving block is connected with the fixed plate. The lower end of the driving block is an inclined block which can extend into the inclined channel. When the female mold and the male mold are combined, the first and second side sliding blocks, the female mold core, and the inner core jointly form the cavity of the product.

[0005] An inlet is arranged at the top end of the female mold. An inlet runner is arranged between the inlet and the cavity.

[0006] A pull rod is further arranged. One end of the pull rod is connected with the fixed plate and the material pushing plate. A first through slot is arranged in the female mold plate. A second through slot is arranged in the male mold plate. The diameter of the second through slot is greater than that of the first through slot. The other end of the pull rod extends through the first through slot and into the second through slot. A flange is arranged at the end of the other end of the pull rod. The diameter of the through slot is greater than that of the first flange.

[0007] Further, a top block is arranged in the male mold plate and covers the lower part of the inner core. When the product is injection molded, the top block abuts against the bottom of the product. A top rod is arranged on the base and can drive the top block to move towards the female mold.

[0008] Further, the inlet flow channel and the cavity connecting part are a point gate structure.

[0009] Further, the female mold is provided with a first limiting roller on one side, the male mold is provided with a second limiting roller on one side, and a limiting rod is further included, the limiting rod is provided with a first limiting waist-shaped groove and a second limiting waist-shaped groove, the first limiting roller extends into the first limiting waist-shaped groove, and the second limiting roller extends into the second limiting waist-shaped groove.

[0010] Further, the male mold plate and the female mold plate are provided with a mold locker on one side.

[0011] The beneficial effects of the utility model are:

[0012] 1. In the structure, the slider structure is cancelled at the corresponding position of the product appearance surface, the slider structure is made on the non-appearance surface of the product, so that the parting line is not generated on the appearance surface of the product, and the polishing and grinding process is reduced.

[0013] 2. The structure changes the gate into a point gate structure, so that the cost of the pin water gap is reduced, and the quality problem generated by the pin water gap is reduced.

[0014] 3. In the structure, the product can be directly ejected from the inner core through the setting of the top block, so that the discharging efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of a no-parting surface mold structure of an embodiment of the application.

[0016] Figure 2 It is a first cross-sectional structure schematic diagram of a no-parting surface mold structure of an embodiment of the application.

[0017] Figure 3 It is a second cross-sectional structure schematic diagram of a no-parting surface mold structure of an embodiment of the application.

[0018] In the drawing, the marks are: the upper fixed plate 1, the material shifting plate 2, the female mold plate 3, the male mold plate 4, the lower fixed seat 5, the first side edge slider 6, the second side edge slider 7, the slider fixed block 8, the driving block 9, the inlet 10, the inlet flow channel 11, the pull rod 12, the first through slot 13, the second through slot 14, the flange 15, the top block 16, the first limiting roller 17, the second limiting roller 18, the limiting rod 19, the mold locker 20, the female mold core 21, and the inner core 22. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below with reference to the drawings.

[0020] As Figure 1 shown, the embodiment of the present application discloses a split-free mold structure, comprising a female mold and a male mold, the female mold comprises an upper fixed plate 1, a material pushing plate 2 and a female mold plate 3 arranged in sequence, the male mold comprises a male mold plate 4 and a lower fixed seat 5 arranged in sequence, the female mold plate 3 is provided with a female mold core 21 and first and second side edge sliding blocks 6 and 7 located above the female mold core 21, the female mold plate 3 is provided with a sliding channel for the first and second side edge sliding blocks 6 and 7 to slide, the first and second side edge sliding blocks 6 and 7 correspond to the non-outer appearance surface of the product, the female mold core 21 corresponds to the outer appearance surface of the product, the outer side of each of the first and second side edge sliding blocks 6 and 7 is provided with a sliding block fixing block 8, the sliding block fixing block 8 is provided with an inclined channel, and the structure further comprises a driving block 9, the upper end of the driving block 9 is connected with the fixed plate, and the lower end of the driving block 9 is an inclined block capable of extending into the inclined channel; when the female mold and the male mold are closed, the first and second side edge sliding blocks 6 and 7, the female mold core 21 and the inner core 22 jointly form a cavity of the product;

[0021] The female mold is provided with an inlet 10 at the top end, and the inlet 10 and the cavity are provided with an inlet runner 11 therebetween;

[0022] The structure further comprises a pull rod 12, one end of the pull rod 12 is connected with the fixed plate and the material pushing plate 2, the female mold plate 3 is provided with a first through slot 13, the male mold plate 4 is provided with a second through slot 14, the diameter of the second through slot 14 is greater than that of the first through slot 13, the other end of the pull rod 12 passes through the first through slot 13 and extends into the second through slot 14, and the end of the other end of the pull rod 12 is provided with a flange 15, and the diameter of the through slot is greater than that of the first flange 15.

[0023] Specifically, when injection molding is performed, the female mold and the male mold are closed, the molten plastic flows into the cavity of the product through the inlet 10 and the inlet runner 11, then the product is cooled and formed in the cavity, after the product is cooled and formed, the female mold and the male mold are opened, when the mold is opened, the fixed plate and the material pushing plate 2 first move away from the male mold, at this time, the female mold plate 3 does not move relative to the male mold plate 4, the gate of the product is broken, at the same time, the driving block 9 is driven to move away from the male mold, at the same time, the driving block 9 drives the sliding block fixing block 8 to move away from the cavity, that is, the sliding block fixing block 8 drives the first and second side sliding blocks to move away from the cavity, the first and second side sliding blocks complete the retreat operation, at this time, the flange 15 of the pull rod 12 gradually moves to the bottom end of the female mold plate 3, when the flange 15 of the pull rod 12 contacts the bottom end of the female mold plate 3, under the driving of the pull rod 12, the female mold plate 3 moves relative to the male mold plate 4, and the product is demolded.

[0024] In the structure, the slider structure is cancelled at the corresponding position of the product appearance surface, and the slider structure is arranged on the non-appearance surface of the product, so that the parting line is not generated on the appearance surface of the product, and the polishing and grinding process is reduced, and the slider retreat operation is performed in advance in the demolding process, so that the product is prevented from being damaged.

[0025] In the embodiment, the top block 16 sleeved on the lower part of the inner core 22 is arranged in the male mold plate 4, and the top block 16 abuts against the bottom of the product after the product is injection molded.

[0026] In specific work, when the male mold and the female mold are opened, the product is still sleeved on the inner core 22, then the driving mechanism at the bottom of the ejector rod drives the ejector rod to move towards the cavity, then the ejector rod pushes the product out of the inner core 22, and the demolding operation of the product is realized.

[0027] In the structure, the product can be directly pushed out of the inner core 22 through the arrangement of the top block 16, so that the discharging efficiency is improved.

[0028] In the embodiment, the inlet flow channel 11 and the cavity connecting part are a point gate structure.

[0029] Specifically, the point gate refers to a small connecting port between the inlet flow channel 11 and the cavity connecting end, so that the connecting end of the inlet flow channel 11 and the cavity can be quickly broken during the mold opening operation, thereby reducing the operation of the pin gate and the quality problems caused by the pin gate.

[0030] In the embodiment, the female mold is provided with a first limiting roller 17, the male mold is provided with a second limiting roller 18, and a limiting rod 19 is further arranged, the limiting rod 19 is provided with a first limiting waist-shaped groove and a second limiting waist-shaped groove, the first limiting roller 17 extends into the first limiting waist-shaped groove, and the second limiting roller 18 extends into the second limiting waist-shaped groove.

[0031] Specifically, when the male mold and the female mold are in the closed state, the first limiting roller 17 is located in the first limiting waist-shaped groove, and the second limiting roller 18 is located in the second limiting waist-shaped groove, when the male mold and the female mold are opened to the position, the first limiting roller 17 is located at the upper end of the first limiting waist-shaped groove, and the second limiting roller 18 is located at the lower end of the second limiting waist-shaped groove, that is, the first limiting waist-shaped groove and the second limiting waist-shaped groove can limit the opening and closing positions of the male mold and the female mold.

[0032] In the embodiment, the male mold plate 4 and the female mold plate 3 are provided with a mold lock 20 on one side.

[0033] In particular, when the fixed plate and the poking plate 2 are first opened, the lock 20 locks the male die plate 4 and the female die plate 3, so that the male die plate 4 and the female die plate 3 do not move relative to each other when the fixed plate and the poking plate 2 move away from the male die, thereby preventing the male die plate 4 and the female die plate 3 from moving relative to each other when the slider has not been completely withdrawn, thereby damaging the product.

[0034] The above-described specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above-described embodiments are merely specific embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A split-free die structure, characterized by: The utility model relates to a mould, including female mould and male mould, the female mould includes the upper fixed plate (1) of setting in proper order, the material plate (2) and female mould plate (3), the male mould includes male mould plate (4) and lower fixed seat (5) of setting in proper order, the female mould plate (3) is provided with female mould core (21) and the first side edge sliding block (6) and the second side edge sliding block (7) located female mould core (21) top, the female mould plate (3) is provided with the slide for the first side edge sliding (6) block and the second side edge sliding block (7) sliding, the first side edge sliding (6) block and the second side edge sliding block (7) with the non appearance face of product correspond, female mould core (21) with the appearance face of product correspond, the first side edge sliding (6) block and the second side edge sliding block (7) outside are provided with sliding block fixed block (8), the sliding block fixed block (8) is provided with inclined channel in, still include drive block (9), the drive block (9) upper end is connected with fixed plate, the drive block (9) lower end is the inclined block of can extend into inclined channel, when female mould and male mould close, the first side edge sliding (6) block, the second side edge sliding block (7), female mould core (21) and inner core (22) jointly constitute the cavity of product together; The female mould top is provided with inlet (10), and inlet (10) and cavity are provided with inlet runner (11) between them; Still include pull rod (12), one end of pull rod (12) is connected with fixed plate and material plate (2), the female mould plate (3) is provided with first through slot (13) in, the male mould plate (4) is provided with second through slot (14) in, the diameter of second through slot (14) is greater than the diameter of first through slot (13), the other end of pull rod (12) passes through first through slot (13) and extends into second through slot (14), and the end of the other end of pull rod (12) is provided with flange (15), and the diameter of through slot is greater than the diameter of first flange (15).

2. The split-line free mold structure of claim 1, wherein: The male mould plate (4) is provided with top block (16) in the sleeve of inner core (22) lower part, when product injection moulding, top block (16) and product bottom abut, and the lower fixed seat (5) is provided with the top rod that can drive top block (16) to the female mould direction movement.

3. The split-line free mold structure of claim 1, wherein: The inlet runner (11) and cavity connection part are point gate structure.

4. The split-line free mold structure of claim 1, wherein: The female mould one side is provided with first limiting gyro wheel (17), and the male mould one side is provided with second limiting gyro wheel (18), still include limiting rod (19), the limiting rod (19) is provided with first limiting waist type groove and second limiting waist type groove, the first limiting gyro wheel (17) extends into first limiting waist type groove, and the second limiting gyro wheel (18) extends into second limiting waist type groove.

5. The split-line free mold structure of claim 1, wherein: The male mould plate (4) and female mould plate (3) one side are provided with mould lock (20).

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