Inner line demolding structure of plastic product injection mold

Abstract

The utility model discloses an inner grain demolding structure of a plastic product injection mold, and belongs to the technical field of injection molds. Comprising a lower mold, an upper mold and a mold core, the lower mold comprises a lower mold base, a mold cavity is formed in the top of the lower mold base, open grooves are formed in the two sides of the mold cavity, a driving piece is arranged on the outer side of the mold cavity, the upper mold comprises an upper mold base, the driving piece drives the upper mold base to vertically move, and a pair of open holes is formed in the bottom face of the upper mold base; a first limiting ring and a second limiting ring are installed at the positions, close to the two ends, in the pair of open holes correspondingly, the mold core comprises a lower mold core body and an upper mold core body, the lower mold core body slides in the mold cavity, connecting blocks are installed on the two sides of the lower mold core body correspondingly, the connecting blocks slide in the open grooves, and connecting rods are installed on the top faces of the connecting blocks correspondingly; a connecting ring is installed on the outer side, close to the top end, of the connecting rod, the connecting rod slides in the open hole, the connecting ring slides between the first limiting ring and the second limiting ring, and the upper die core is installed on the bottom face of the upper die base.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an internal grain demoulding structure of an injection mold for a plastic product. Background Art

[0002] With the advancement of mold design technology, more and more innovative application-oriented molds are appearing in various industries. Among them, injection molds are tools for producing plastic products, and they also give plastic products complete structures and precise dimensions. The so-called injection molding is a processing method used in the mass production of certain parts with complex shapes. Specifically, it refers to injecting heated and molten material into the mold cavity under high pressure. After cooling and solidification, the molded product is obtained. Mold demolding refers to removing the solidified product from the mold for subsequent finishing.

[0003] The injection molds currently on the market are difficult to remove from the mold cavity after the product is formed due to factors such as the mold shape and texture. The existing injection molds themselves do not have a demolding structure and require additional demolding equipment to assist the user in demolding, which makes actual demolding more troublesome. Utility Model Content

[0004] The purpose of the present invention is to provide an internal pattern demoulding structure for an injection mold of a plastic product, so as to solve the problems raised in the above-mentioned background technology.

[0005] In view of the above problems, the technical solution proposed by the present invention is:

[0006] The top of the mold base is fixed with a top mold base, and the bottom mold base is fixed with a top mold base, and a driving member is provided on the outside of the mold cavity; the upper mold base includes a lower mold base, and the driving member drives the upper mold base to move vertically; the bottom surface of the upper mold base is provided with a pair of openings, and the interior of the pair of openings is respectively provided with a first limiting ring and a second limiting ring near the two ends thereof; the mold core includes a lower mold core and an upper mold core; the lower mold core slides in the mold cavity; connecting blocks are installed on both sides of the lower mold core, the connecting blocks slide in the slots, and connecting rods are installed on the top surfaces of the connecting blocks; a connecting ring is installed on the outside of the connecting rod near its top end, the connecting rod slides in the opening, and the connecting ring slides between the first limiting ring and the second limiting ring; the upper mold core is installed on the bottom surface of the upper mold base. The beneficial effect of adopting the above further solution is that after the molded product cools in the mold, the upper mold base is driven to rise by the driving member. After it rises to a certain height, there is enough space between the upper mold core and the lower mold core. At the same time, the second limiting ring also abuts against the connecting ring. At this time, as the upper mold base continues to rise, the lower mold core will be taken away from the mold cavity, so that the molded product is ejected from the mold cavity. The space between the upper mold core and the lower mold core can be used by the user to remove the molded product from the lower mold core, thereby achieving the purpose of facilitating demolding for the user. Furthermore, the driving member includes a connecting frame installed on the outside of the lower mold base, the top surface of the connecting frame is rotatably connected to a threaded sleeve, the internal thread of the threaded sleeve is engaged with a threaded rod, a connector is installed at the center of the top surface of the upper mold base, and the bottom end of the threaded rod is connected to the connector.

[0007] Furthermore, a pair of U-shaped blocks are installed on the outer side of the upper mold base, and the two sides of the connecting frame slide in the pair of U-shaped blocks.

[0008] Specifically, the connecting frame is U-shaped, the threaded sleeve is rotatably mounted on the crossbeam of the connecting frame, and the grooves of the pair of U-shaped blocks fit into the outer sides of the pair of vertical rods of the connecting frame.

[0009] The beneficial effect of adopting the above further solution is that the upper die base can be raised or lowered by rotating the threaded sleeve, while the U-shaped block enables the upper die base to maintain stable movement.

[0010] Furthermore, the four sides of the lower mold core fit with the sides of the mold cavity, the four sides of the connecting block fit with the sides of the slot, the connecting block and the slot are at the same height, the outer side of the connecting rod fits with the inner rings of the first limiting ring and the second limiting ring, and the side of the connecting ring fits with the side of the opening.

[0011] The beneficial effect of adopting the above-mentioned further scheme is that, by limiting the size of the above-mentioned components, the gaps between the lower mold core and the mold cavity, and between the connecting block and the slot are within an acceptable range, ensuring that there is sufficient pressure in the mold cavity after the upper mold base and the lower mold base are fitted together, and at the same time ensuring that the raw material does not penetrate too much into the gaps between the lower mold core and the mold cavity, and between the connecting block and the slot. After the bottom surface of the lower mold core and the mold cavity are fitted together, the top surface of the connecting block is flush with the lower mold base, so that the connecting block will not hinder the fitting of the upper mold base and the lower mold base, and when the upper mold base moves, the connecting rod will not shake in the opening.

[0012] Furthermore, the upper mold core also slides in the mold cavity.

[0013] Furthermore, an injection hole penetrating the upper mold core is provided on the top surface of the upper mold base.

[0014] Furthermore, the surfaces of the lower mold core and the upper mold core are both provided with textures.

[0015] The beneficial effect of adopting the above-mentioned further scheme is that the upper mold base is lowered by rotating the threaded sleeve. At this time, the lower mold core and the upper mold base are lowered together until the bottom surface of the lower mold core is in contact with the mold cavity. At this time, the upper mold base is continued to be lowered, and the first limit ring will be against the connecting ring. At the same time, the upper mold base and the lower mold base are completely in contact. The upper mold core will also enter the mold cavity at this time, and the raw material will be injected through the injection hole. The raw material will fill the gap between the lower mold core and the upper mold core, thereby being injected into the desired shape, and texture will also be formed on its surface.

[0016] Compared with the prior art, the beneficial effect of the present invention is as follows: the internal pattern demolding structure of the injection mold for the plastic product, after the molded product is cooled in the mold, uses a driving part to drive the upper mold base to rise. After it rises to a certain height, there is enough space between the upper mold core and the lower mold core. At the same time, the second limiting ring also offsets the connecting ring. At this time, as the upper mold base continues to rise, the lower mold core will be brought away from the mold cavity, so that the molded product is ejected from the mold cavity, and the space between the upper mold core and the lower mold core can be used by the user to remove the molded product from the lower mold core, thereby achieving the purpose of facilitating the user's demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the inner pattern demoulding structure of the plastic product injection mold disclosed in an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the exploded structure of the inner pattern demoulding structure of the plastic product injection mold disclosed in an embodiment of the present utility model;

[0019] Figure 3 for Figure 2 A schematic diagram of the structure of the A structure in the middle;

[0020] Figure 4 This is a schematic cross-sectional view of the inner pattern demoulding structure of the plastic product injection mold disclosed in an embodiment of the present utility model;

[0021] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of structure B.

[0022] In the figure: 100, lower mold; 1001, lower mold base; 1002, mold cavity; 1003, slot; 1004, connecting frame; 1005, threaded sleeve; 1006, threaded rod; 200, upper mold; 2001, upper mold base; 2002, U-shaped block; 2003, connector; 2004, injection hole; 2005, opening; 2006, second limiting ring; 2007, first limiting ring; 300, mold core; 3001, lower mold core; 3002, upper mold core; 3003, connecting block; 3004, connecting rod; 3005, connecting ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1 - Figure 5The utility model provides a technical solution: an internal pattern demoulding structure of an injection mold for a plastic product, comprising a lower mold 100, an upper mold 200, and a mold core 300. The lower mold 100 comprises a lower mold base 1001, a mold cavity 1002 is provided on the top of the lower mold base 1001, slots 1003 are provided on both sides of the mold cavity 1002, a driving member is provided on the outer side of the mold cavity 1002, and an upper mold 200 comprises an upper mold base 2001, which drives the upper mold base 2001 to move vertically. The bottom surface of the upper mold base 2001 is provided with a pair of openings 2005, and the inside of the pair of openings 2005 is respectively installed with a first limiting ring 2007 and a second limiting ring 2006 near its two ends. The mold core 300 includes a lower mold core 3001 and an upper mold core 3002. The lower mold core 3001 slides in the mold cavity 1002. Connecting blocks 3003 are installed on both sides of the lower mold core 3001. The connecting blocks 3003 slide in the slots 1003. The top surfaces of the connecting blocks 3003 are A connecting rod 3004 is installed, and a connecting ring 3005 is installed on the outer side of the connecting rod 3004 near its top. The connecting rod 3004 slides in the opening 2005, and the connecting ring 3005 slides between the first limiting ring 2007 and the second limiting ring 2006. The upper mold core 3002 is installed on the bottom surface of the upper mold base 2001. After the molded product is cooled in the mold, the upper mold base 2001 is driven to rise by the driving member. After it rises to a certain height, the upper mold core 3002 is There is enough space between the upper mold core 3002 and the lower mold core 3001, and the second limiting ring 2006 is also against the connecting ring 3005. At this time, as the upper mold base 2001 continues to rise, the lower mold core 3001 will be brought away from the mold cavity 1002, so that the molded product is ejected from the mold cavity 1002, and the space between the upper mold core 3002 and the lower mold core 3001 can be used for the user to remove the molded product from the lower mold core 3001, thereby achieving the purpose of facilitating the user's demoulding.

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1 - Figure 5The utility model provides a technical solution: an internal texture demoulding structure of an injection mold for a plastic product, wherein the driving part comprises a connecting frame 1004 mounted on the outside of a lower mold base 1001, a threaded sleeve 1005 being rotatably connected to the top surface of the connecting frame 1004, a threaded rod 1006 being engaged with the internal thread of the threaded sleeve 1005, a connecting head 2003 being mounted at the center of the top surface of an upper mold base 2001, the bottom end of the threaded rod 1006 being connected to the connecting head 2003, and the upper mold base 2001 being engaged with the threaded rod 1006. 1 is installed on the outside of a pair of U-shaped blocks 2002, and both sides of the connecting frame 1004 slide in the pair of U-shaped blocks 2002. The connecting frame 1004 is U-shaped, and the threaded sleeve 1005 is rotatably installed on the crossbeam of the connecting frame 1004, while the grooves of the pair of U-shaped blocks 2002 fit into the outer sides of the pair of vertical rods of the connecting frame 1004. Rotating the threaded sleeve 1005 can make the upper die base 2001 rise or fall, while the U-shaped blocks 2002 keep the upper die base 2001 moving smoothly.

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1 - Figure 5 The utility model provides a technical solution: an internal texture demoulding structure of an injection mold for a plastic product, wherein the upper mold core 3002 also slides in the mold cavity 1002, and the top surface of the upper mold base 2001 is provided with an injection hole 2004 that passes through the upper mold core 3002. The surfaces of the lower mold core 3001 and the upper mold core 3002 are both provided with textures. The threaded sleeve 1005 is rotated to lower the upper mold base 2001. At this time, the lower mold core 3001 and the upper mold base 2001 are lowered together until the lower mold core 3002 is lowered. 1 is in contact with the mold cavity 1002. At this time, the upper mold base 2001 is further lowered, and the first limiting ring 2007 is against the connecting ring 3005. At the same time, the upper mold base 2001 and the lower mold base 1001 are completely in contact with each other. The upper mold core 3002 also enters the mold cavity 1002 at this time, and the raw material is injected through the injection hole 2004. The raw material fills the gap between the lower mold core 3001 and the upper mold core 3002, thereby being injection-molded into the desired shape, and textures are also formed on its surface.

[0029] Specifically, the working principle of the internal pattern demoulding structure of the injection mold for plastic products is as follows: when in use, the threaded sleeve 1005 is rotated to lower the upper mold base 2001. At this time, the lower mold core 3001 and the upper mold base 2001 are lowered together until the bottom surface of the lower mold core 3001 is in contact with the mold cavity 1002. At this time, the upper mold base 2001 is continued to be lowered, and the first limiting ring 2007 will be against the connecting ring 3005. At the same time, the upper mold base 2001 and the lower mold base 1001 are completely in contact with each other. The upper mold core 3002 will also enter the mold cavity 1002 at this time, and the raw material will be injected through the injection hole 2004. The raw material will fill the space between the lower mold core 3001 and the upper mold core 3002. The gap is formed, thereby being injected into the desired shape, and textures are also formed on its surface. After the molded product is cooled in the mold, the upper mold base 2001 is driven to rise by a driving member. After it rises to a certain height, there is enough space between the upper mold core 3002 and the lower mold core 3001. At the same time, the second limiting ring 2006 is also against the connecting ring 3005. At this time, as the upper mold base 2001 continues to rise, the lower mold core 3001 will be taken away from the mold cavity 1002, so that the molded product is ejected from the mold cavity 1002, and the space between the upper mold core 3002 and the lower mold core 3001 can be used for the user to remove the molded product from the lower mold core 3001.

Claims

1. An internal texture demoulding structure for a plastic product injection mold, characterized in that: The invention comprises a lower mold (100), an upper mold (200), and a mold core (300), wherein the lower mold (100) comprises a lower mold base (1001), a mold cavity (1002) is provided on the top of the lower mold base (1001), slots (1003) are provided on both sides of the mold cavity (1002), and a driving member is provided on the outer side of the mold cavity (1002), the upper mold (200) comprises an upper mold base (2001), the driving member drives the upper mold base (2001) to move vertically, a pair of openings (2005) are provided on the bottom surface of the upper mold base (2001), and a first limiting ring (2007) and a second limiting ring (2006) are respectively installed inside the pair of openings (2005) near their two ends, and the mold core (300) comprises a lower mold core (3001), an upper mold core (3002), the lower mold core (3001) slides in the mold cavity (1002), connecting blocks (3003) are installed on both sides of the lower mold core (3001), the connecting blocks (3003) slide in the slot (1003), the top surfaces of the connecting blocks (3003) are installed with connecting rods (3004), the outer sides of the connecting rods (3004) are installed with connecting rings (3005) near the top ends thereof, the connecting rods (3004) slide in the opening (2005), the connecting rings (3005) slide between the first limiting ring (2007) and the second limiting ring (2006), and the upper mold core (3002) is installed on the bottom surface of the upper mold base (2001).

2. The inner pattern demoulding structure of a plastic product injection mold according to claim 1, characterized in that: The driving member comprises a connecting frame (1004) installed on the outside of the lower die base (1001); the top surface of the connecting frame (1004) is rotatably connected to a threaded sleeve (1005); the internal thread of the threaded sleeve (1005) is engaged with a threaded rod (1006); a connecting head (2003) is installed at the center of the top surface of the upper die base (2001); and the bottom end of the threaded rod (1006) is connected to the connecting head (2003).

3. The inner pattern demoulding structure of the plastic product injection mold according to claim 2, characterized in that: A pair of U-shaped blocks (2002) are installed on the outer side of the upper die seat (2001), and both sides of the connecting frame (1004) slide in the pair of U-shaped blocks (2002).

4. The inner pattern demoulding structure of a plastic product injection mold according to claim 1, characterized in that: The four sides of the lower mold core (3001) are in contact with the side surfaces of the mold cavity (1002), the four sides of the connecting block (3003) are in contact with the side surfaces of the slot (1003), the connecting block (3003) and the slot (1003) are at the same height, the outer side of the connecting rod (3004) is in contact with the inner rings of the first limiting ring (2007) and the second limiting ring (2006), and the side surface of the connecting ring (3005) is in contact with the side surface of the opening (2005).

5. The inner pattern demoulding structure of a plastic product injection mold according to claim 1, characterized in that: The upper mold core (3002) also slides in the mold cavity (1002).

6. The inner pattern demoulding structure of a plastic product injection mold according to claim 1, characterized in that: The top surface of the upper mold base (2001) is provided with an injection hole (2004) that passes through the upper mold core (3002).

7. The inner pattern demoulding structure of a plastic product injection mold according to claim 1, characterized in that: The surfaces of the lower mold core (3001) and the upper mold core (3002) are both provided with textures.

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