Compact core-pulling structure of air curtain interior trimming panel injection mold

Abstract

The utility model provides a compact core-pulling structure of an air curtain trim panel injection mold, which comprises a template, an upper mold, a lower mold and an ejection mechanism, the ejection mechanism comprises a straight ejection structure and a bidirectional core-pulling structure, the bidirectional core-pulling structure comprises a first shoveling machine and two first core-pulling blocks, one side of the first shoveling machine is fixed on the template, and the other side of the first shoveling machine is fixed on the lower mold. The two first core pulling blocks are arranged at the end, away from the die plate, of the first shoveling machine in an I-shaped sliding and inclined sleeving mode, and the first core pulling blocks and the lower die are matched to form buckling positions, through holes and round holes. When the mold is opened, the bidirectional core-pulling structure can firstly pull out the first core-pulling block from the buckling position, and a straight ejection space is reserved for the buckling position, so that the straight ejection structure can conveniently eject the air curtain interior trimming panel; a bidirectional core-pulling structure is adopted, so that the left and right air curtain interior trim panels can be pulled at one time, the size of the mold is reduced, and the compactness of the mold is enhanced; and meanwhile, the I-shaped sliding is adopted to ensure the accurate movement of the first core-pulling block in the mold opening and closing process, so that the stability and reliability of the ejection process and the accuracy of the molded air curtain interior trimming panel are ensured.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a compact core-pulling structure of an injection mold for an air curtain interior trim panel. Background Art

[0002] The bumper left and right air curtain interior panels of the related technology are as follows Figure 1 Figure 2 As shown, the air curtain interior panel 9 is provided with a buckle position 91, a round hole 93 is provided on the buckle position 91, and a through hole 92 is provided near the buckle position 91. The through hole 92 and the round hole 93 are arranged toward the top of the mold, and the angle required for the buckle position 91 to be demolded is relatively large. If a common straight top structure is adopted, the common straight top structure includes a power source and a straight top rod, and the two ends of the straight top rod are respectively arranged on the product to be ejected and the power source, and the power source drives the straight top rod to move along the mold opening direction. Taking the related technology as an example, a straight top rod is arranged under the air curtain interior panel 9, and the power source pushes the straight top rod to eject the air curtain interior panel 9 from the mold along the mold opening direction. However, since this straight top structure can only move straight, it is difficult to eject the through hole 92, the round hole 93 and the buckle position 91 from the mold, which will inevitably cause damage to the through hole 92, the round hole 93 and the buckle position 91 of the air curtain interior panel, affecting the product quality. Utility Model Content

[0003] In order to reduce the damage to the mold structure during demoulding, the present application provides a compact core-pulling structure for an air curtain interior trim injection mold.

[0004] The compact core-pulling structure of the air curtain interior panel injection mold provided in the present application adopts the following technical solution:

[0005] A compact core-pulling structure of an air curtain interior panel injection mold comprises a template, an upper mold, a lower mold and an ejection mechanism, wherein the ejection mechanism comprises a straight ejection structure, wherein the straight ejection structure comprises a power source and a straight ejector rod, and the ejection mechanism further comprises a bidirectional core-pulling structure, wherein the bidirectional core-pulling structure comprises a first shovel and two first core-pulling blocks, wherein one side of the first shovel is fixed to the template, and the two first core-pulling blocks are arranged on the end of the first shovel away from the template in an I-shaped sliding and tilting manner, and the first core-pulling block cooperates with the lower mold to form a buckle position, a through hole and a round hole; when the mold is opened, the template drives the first shovel to move, and the first core-pulling block is driven to be pulled out of the buckle position, and the straight ejection structure then ejects the injection-molded air curtain interior panel.

[0006] Through the above technical scheme, the setting of the two-way core-pulling structure enables the two-way core-pulling structure to first pull out the first core-pulling block from the buckle position when the mold is opened, leaving a straight top space for the buckle position, so as to facilitate the straight top structure to eject the air curtain interior panel; the two-way core-pulling structure can be used to pull the two air curtain interior panels on the left and right at one time, reducing the volume of the mold and enhancing the compactness of the mold; at the same time, the I-shaped sliding is used to ensure the precise movement of the first core-pulling block during the opening and closing of the mold, ensuring a smooth and reliable ejection process and the accuracy of the formed air curtain interior panel.

[0007] Preferably, the ejection mechanism also includes a special-shaped bidirectional core-pulling structure, which includes a second shovel, two second core-pulling blocks and a core-pulling seat. One side of the second shovel is fixed on the template, and the two second core-pulling blocks are I-shaped sliding and tilted sleeves on the end of the second shovel away from the template. The second core-pulling block cooperates with the lower mold to form a through hole, and the core-pulling seat is arranged on the upper mold. The core-pulling seat is located at the lower end of the second core-pulling block, and the core-pulling seat cooperates with the lower mold to form a buckle position and a round hole.

[0008] Through the above technical scheme, since the air curtain interior panel fasteners in the related technology are provided with one on each side, in order to reduce the volume of the mold and make the mold structure more compact, one of the two-way core-pulling structures is changed to a special-shaped two-way core-pulling structure. The change of the special-shaped two-way core-pulling structure compared to the two-way core-pulling structure is that the first core-pulling block is split into a second core-pulling block and a core-pulling seat to reduce the volume and increase the compactness of the mold.

[0009] Preferably, the core-pulling seat and the lower die are provided with inclined bosses, and when the molds are completely closed, the core-pulling seat and the bosses of the lower die fit together to form a circular hole.

[0010] Through the above technical solution, during the mold opening process, the boss of the core-pulling seat slides out from the molding circular hole at an angle, reducing the possibility of damaging the molding mold during ejection.

[0011] Preferably, an insert is further provided on the upper mold, the side surfaces of the insert are tightly fitted with the first shovel machine and the second shovel machine, and the upper mold is provided with a matching groove matching with the insert.

[0012] Through the above technical solution, the thickness of the upper die is relatively thick. During processing, if the matching groove is not provided, it is difficult for the operator to extend the tool into the inner side of the upper die to process the groove where the core pulling block moves.

[0013] Preferably, the bottom surface of the insert is in an inclined fit with the top surfaces of the first core pulling block and the second core pulling block.

[0014] Through the above technical solution, the first core pulling block and the second core pulling block can also be restricted by the insert to slide only along the I-shaped groove, thereby increasing the stability of the first core pulling block and the second core pulling block during the mold opening and closing process to ensure the quality of the mold.

[0015] Preferably, it also includes a first spring, wherein both ends of the first spring are respectively arranged on the template and the upper mold, the first spring is arranged parallel to the mold opening and closing direction, the first spring is always in a stretched state, and when the injection molding machine is away from the template, the first spring lifts the template along the mold opening direction, and the first shovel machine and the second shovel machine are driven to move along the mold opening direction.

[0016] Through the above technical solution, when working, the injection molding machine moves and abuts against the template, pushes the template toward the mold closing direction until the template abuts against the upper mold, and makes the first core pulling block and the second core pulling block abut against the lower mold to facilitate the molding of the mold; and when opening the mold, the injection molding machine first moves away from the template, and the template moves along the mold opening direction driven by the first spring, so that the first core pulling block and the second core pulling block are pulled out from the mold after molding.

[0017] Preferably, plastic hooks are fixed around the bottom surface of the upper mold, and wire holes are opened on the template and the upper mold, which completely penetrate the template along the mold opening and closing direction, and the wire holes are coaxially arranged with the plastic hooks; when the mold is opened, the metal wire passes through the wire holes to pull the plastic hooks, thereby driving the upper mold to move along the mold opening direction.

[0018] Through the above technical solution, the operator can use a metal wire to pull the plastic hook fixed on the upper mold to open the upper mold. Compared with other methods that use oil cylinders or air cylinders as power sources, using this method to pull the upper mold reduces the size of the entire mold and enhances compactness.

[0019] The technical effects of this utility model are mainly reflected in the following aspects:

[0020] 1. The utility model designs a two-way core-pulling structure, which leaves a straight top space for the buckle position during the mold opening process, and can pull the core of the left and right air curtain interior panels at one time, reducing the mold volume and enhancing the compactness of the mold. At the same time, the I-shaped sliding is adopted to ensure the precise movement of the first core-pulling block during the mold opening and closing process, ensuring the smooth and reliable ejection process and the accuracy of the molded air curtain interior panels;

[0021] 2. The utility model designs a special-shaped two-way core-pulling structure, splits the function of one of the two-way core-pulling structures to reduce the mold volume and enhance the compactness of the mold;

[0022] 3. The utility model provides inserts and matching grooves, thereby facilitating processing by operators and limiting the movement of the first core-pulling block and the second core-pulling block in subsequent production work. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the related technology;

[0024] Figure 2 For related technologies Figure 1Section view of the AA section line;

[0025] Figure 3 This is a schematic diagram of the overall structure of an embodiment of the present application;

[0026] Figure 4 This is a schematic diagram of the overall structure of the upper mold in the embodiment of the present application;

[0027] Figure 5 This is a schematic diagram of the overall structure of the upper mold turning surface in the embodiment of the present application;

[0028] Figure 6 It is a schematic diagram of the overall structure of the bidirectional core-pulling structure and the special-shaped bidirectional core-pulling structure in the embodiment of the present application;

[0029] Figure 7 This is a partial structural schematic diagram of the lower mold in the embodiment of the present application;

[0030] Figure 8 This is a schematic diagram of the overall structure of the pumping hole structure in the embodiment of the present application;

[0031] Fig. 9 It is a schematic diagram of the overall structure of the inclined roof structure in the embodiment of the present application.

[0032] Figure numerals: 1, template; 11, wire hole; 2, upper mold; 21, injection port; 22, matching groove; 23, plastic hook; 3, lower mold; 4, ejector mechanism; 41, two-way core pulling structure; 411, first shovel machine; 412, first core pulling block; 42, straight ejector structure; 421, straight ejector rod; 43, special-shaped two-way core pulling structure; 431, second shovel machine; 432, second core pulling block; 433, core pulling seat; 434, Boss; 44, hole extraction structure; 441, hole extraction rod; 442, return spring; 443, limit structure; 444, limit rod; 445, limit block; 45, inclined top structure; 451, inclined top rod; 452, inclined top block; 453, hole block; 5, cavity; 6, runner; 7, insert; 8, first spring; 9, air curtain interior panel; 91, buckle; 92, through hole; 93, round hole; 94, through hole; 10, extraction block. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-9 , the specific implementation methods of the utility model are further described in detail to make the technical solution of the utility model easier to understand and grasp.

[0034] The present application discloses a compact core-pulling structure of an air curtain interior panel injection mold:

[0035] Reference Figure 3-Figure 9A compact core-pulling structure of an air curtain interior panel injection mold comprises a template 1, an upper mold 2, a lower mold 3 and an ejection mechanism 4, wherein the ejection mechanism comprises a straight ejection structure 42, the straight ejection structure 42 comprises a power source and a straight ejector rod 421, the ejection mechanism 4 also comprises a two-way core-pulling structure 41, the two-way core-pulling structure 41 comprises a first shovel 411 and two first core-pulling blocks 412, one side of the first shovel 411 is fixed on the template 1, the two first core-pulling blocks 412 are arranged on the end of the first shovel 411 away from the template 1 in an I-shaped sliding and tilting manner, the first core-pulling block 412 cooperates with the lower mold 3 to form a buckle position 91, a through hole 92 and a round hole 93; when the mold is opened, the template 1 drives the first shovel 411 to move, the first core-pulling block 412 is driven to be pulled out from the buckle position 91, and the straight ejection structure 42 then ejects the injection-molded air curtain interior panel 9.

[0036] The setting of the two-way core-pulling structure 41 enables the two-way core-pulling structure 41 to first pull out the first core-pulling block 412 from the buckle position 91 during the mold opening operation, leaving a straight-pushing space for the buckle position 91, so as to facilitate the straight-pushing structure 42 to eject the air curtain interior panel 9. The two-way core-pulling structure 41 can be used to pull out the left and right air curtain interior panels 9 at a time, reducing the mold volume. At the same time, the I-shaped sliding is used to ensure the precise movement of the first core-pulling block 412 during the mold opening and closing process, ensuring a smooth and reliable ejection process and the accuracy of the molded air curtain interior panel 9.

[0037] Reference Figure 3 and Figure 5 The upper mold 2, the lower mold 3 and the ejection mechanism 4 together form a casting cavity 5. The upper mold 2 includes an injection port 21 and a runner 6 connected to the injection port 21. The runner 6 connects the injection port 21 and the cavity 5. The injection port 21 is connected to an external injection molding machine, and the air curtain interior panel 9 is injected into the cavity 5 through the runner 6.

[0038] Reference Figure 6 The ejection mechanism 4 also includes a special-shaped bidirectional core-pulling structure 43, which includes a second shovel 431, two second core-pulling blocks 432 and a core-pulling seat 433. One side of the second shovel 431 is fixed on the template 1, and the two second core-pulling blocks 432 are arranged on the end of the second shovel 431 away from the template 1 in an I-shaped sliding and tilting manner. The second core-pulling block 432 cooperates with the lower mold 3 to form a through hole 92, and the core-pulling seat 433 is fixed on the upper mold 2. The core-pulling seat 433 is located at the lower end of the second core-pulling block 432, and the core-pulling seat 433 cooperates with the lower mold 3 to form a buckle position 91 and a round hole 93. Since the air curtain interior panel 9 in the related technology is designed with one fastener on each side, in order to reduce the mold volume and make the mold structure more compact, one of the two-way core pulling structures 41 is changed into a special-shaped two-way core pulling structure 43. The special-shaped two-way core pulling structure 43 is changed compared with the two-way core pulling structure 41 in that the first core pulling block 412 is split into a second core pulling block 432 and a core pulling seat 433 to reduce the volume and increase the compactness of the mold.

[0039] Reference Figure 6-Figure 7 The core puller 433 and the lower mold 3 are fixed with an inclined boss 434. When the mold is fully closed, the core puller 433 and the boss 434 of the lower mold 3 fit into the molding circular hole 93. During the mold opening process, the boss 434 of the core puller 433 slides out of the molding circular hole 93 at an angle, reducing the possibility of damaging the molding mold during ejection.

[0040] Reference Figure 5-Figure 6 The upper mold 2 is also detachably fixed with an insert 7 by bolts, and the side of the insert 7 is tightly fitted with the first shovel 411 and the second shovel 431, and the upper mold 2 is provided with a matching groove 22 that matches the insert 7. Since the upper mold 2 is relatively thick, during processing, if the matching groove 22 is not provided, it is difficult for the operator to insert the tool into the inner side of the upper mold 2 to process the slot where the core pulling block moves. The bottom surface of the insert 7 is obliquely fitted with the top surface of the first core pulling block 412 and the second core pulling block 432. The setting of the insert 7 can also use the insert 7 to limit the first core pulling block 412 and the second core pulling block 432 to slide only along the I-shaped groove, increase the stability of the movement of the first core pulling block 412 and the second core pulling block 432 during the process of opening and closing the mold, and ensure the quality of the mold.

[0041] Reference Figure 5 , and also includes a first spring 8, the two ends of the first spring 8 are respectively fixed on the template 1 and the upper mold 2, the first spring 8 moves parallel to the mold opening and closing direction, and the first spring 8 is always in a stretched state.

[0042] During the injection molding operation, the injection molding machine moves and abuts against the template 1, and pushes the template 1 toward the mold closing direction until the template 1 abuts against the upper mold 2, and makes the first core pulling block 412 and the second core pulling block 432 abut against the lower mold 3 to facilitate the molding of the mold; when opening the mold, the injection molding machine first moves away from the template 1, and the template 1 moves along the mold opening direction driven by the first spring 8, so that the first core pulling block 412 and the second core pulling block 432 are pulled out from the mold after molding.

[0043] Reference Figure 4-Figure 5 , plastic hooks 23 are fixed around the bottom of the upper mold 2, and wire holes that completely penetrate the template 1 along the mold opening and closing direction are opened on the template 1 and the upper mold 2, and the wire hole 11 is coaxially arranged with the plastic hook 23; when the mold is opened, the metal wire passes through the wire hole 11 to pull the plastic hook 23, thereby driving the upper mold 2 to move along the mold opening direction. The operator can use the metal wire to pull the plastic hook 23 fixed on the upper mold 2 to open the upper mold 2. Compared with other methods that use oil cylinders or air cylinders as power sources, using this method to pull the upper mold 2 reduces the size of the entire mold and enhances compactness.

[0044] Reference Figure 1-Figure 2The air curtain interior panel 9 of the related art is also provided with three oblique through holes 94 on the other side away from the buckle position 91 . The three through holes 94 are located at tricky positions, and are difficult to be directly ejected by the straight ejection structure 42 , just like the buckle position 91 .

[0045] Reference Figure 7-Figure 9 The ejection mechanism 4 also includes a hole-pulling structure 44 and an inclined ejection structure 45. The hole-pulling structure 44 is used to form the through holes 94 on both sides, and when the mold is opened, it is pulled out from the through holes 94 like the two-way core-pulling structure 41 to facilitate the ejection of the straight ejection structure 42.

[0046] The hole extraction structure 44 includes a hole extraction rod 441, a reset spring 442 and a limit structure 443. The hole extraction rod 441 is obliquely inserted into the lower die 3. One end of the hole extraction rod 441 cooperates with the lower die 3 to form the perforations 94 on both sides. The other end of the hole extraction rod 441 extends out of the lower die 3. The limit structure 443 includes a limit rod 444 and a limit block 445. One end of the limit rod 444 is fixed to the template 1, and the other end is obliquely matched with the hole extraction rod 441 extending out of the lower die 3. The limit block 445 is fixed to the lower die 3 by bolts. The limit block 445 is located at the upper and lower sides of the hole extraction rod 441. The limit block 445 is used to limit the hole extraction rod 441 to move only along the length direction. The reset spring 442 is sleeved on the hole extraction rod 441. The two ends of the reset spring 442 are respectively fixed to the hole extraction rod 441 and the lower die 3, and are always in a stretched state. When the limiting rod 444 moves along the mold opening direction with the template 1 until it is away from the hole-drawing rod 441 , the hole-drawing rod 441 moves outward under the action of the spring, thereby leaking the through holes 94 on both sides.

[0047] Reference Figure 7-Figure 8 A draw block 10 is fixed by bolts near the draw hole structure 44. The draw block 10 is provided because the structure of the air curtain interior panel 9 near the perforation 94 is relatively complex. In order to ensure the injection molding accuracy, a detachable draw block 10 is used so that the draw block 10 can be replaced when the mold accuracy decreases to ensure the mold accuracy.

[0048] Reference Fig. 9 The inclined top structure 45 is transformed from a part of the straight top structure 42, and one of the straight top rods 421 of the straight top structure is tilted to be transformed into an inclined top rod 451, and an inclined top block 452 is fixed on the end of the inclined top rod 451 close to the lower mold 3, and a hole block 453 is fixed on the inclined top block 452, and the hole block 453 is used to form the middle through hole 94. When the mold is opened, the inclined top block 452 is tilted to eject so that the hole block 453 is pulled out from the middle through hole 94.

[0049] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A compact core-pulling structure of an air curtain interior panel injection mold, comprising a mold plate (1), an upper mold (2), a lower mold (3) and an ejection mechanism (4), wherein the ejection mechanism comprises a straight ejection structure (42), wherein the straight ejection structure (42) comprises a power source and a straight ejection rod (421), and wherein: The ejection mechanism (4) also includes a bidirectional core-pulling structure (41), which includes a first shovel (411) and two first core-pulling blocks (412), one side of the first shovel (411) is fixed on the template (1), and the two first core-pulling blocks (412) are arranged on the end of the first shovel (411) away from the template (1) in an I-shaped sliding and tilting manner, and the first core-pulling blocks (412) cooperate with the lower mold (3) to form a buckle position (91), a through hole (92) and a round hole (93); When the mold is opened, the template (1) drives the first shovel (411) to move, and the first core-pulling block (412) is driven to be pulled out from the buckle position (91), and the straight top structure (42) then ejects the injection-molded air curtain interior panel (9).

2. The compact core-pulling structure of the air curtain interior panel injection mold according to claim 1, characterized in that: The ejection mechanism (4) also includes a special-shaped bidirectional core-pulling structure (43), which includes a second shovel (431), two second core-pulling blocks (432) and a core-pulling seat (433). One side of the second shovel (431) is fixed on the template (1), and the two second core-pulling blocks (432) are arranged on the end of the second shovel (431) away from the template (1) in an I-shaped sliding and tilting manner. The second core-pulling block (432) cooperates with the lower mold (3) to form a through hole (92). The core-pulling seat (433) is arranged on the upper mold (2), and the core-pulling seat (433) is located at the lower end of the second core-pulling block (432). The core-pulling seat (433) cooperates with the lower mold (3) to form a buckle position (91) and a round hole (93).

3. The compact core-pulling structure of the air curtain interior panel injection mold according to claim 2, characterized in that: The core-pulling seat (433) and the lower mold (3) are provided with inclined bosses (434). When the molds are completely closed, the core-pulling seat (433) and the bosses (434) of the lower mold (3) fit together to form a circular hole (93).

4. The compact core-pulling structure of the air curtain interior panel injection mold according to claim 2, characterized in that: The upper mold (2) is also provided with an insert (7), the side surface of the insert (7) is tightly fitted with the first shovel (411) and the second shovel (431), and the upper mold (2) is provided with a matching groove (22) that matches the insert (7).

5. The compact core-pulling structure of the air curtain interior panel injection mold according to claim 4, characterized in that: The bottom surface of the insert (7) is in an inclined fit with the top surfaces of the first core-pulling block (412) and the second core-pulling block (432).

6. The compact core-pulling structure of the air curtain interior panel injection mold according to claim 2, characterized in that: It also includes a first spring (8), the two ends of which are respectively arranged on the template (1) and the upper mold (2), the first spring (8) is arranged parallel to the mold opening and closing direction, and the first spring (8) is always in a stretched state. When the injection molding machine is away from the template (1), the first spring (8) lifts the template (1) along the mold opening direction, and the first shovel (411) and the second shovel (431) are driven to move along the mold opening direction.

7. The compact core-pulling structure of the air curtain interior panel injection mold according to claim 1, characterized in that: Plastic hooks (23) are fixed around the bottom surface of the upper mold (2), and wire holes (11) are provided on the template (1) and the upper mold (2) and completely penetrate the template (1) along the mold opening and closing direction. The wire holes (11) and the plastic hooks (23) are coaxially arranged; when the mold is opened, the metal wire passes through the wire holes (11) to pull the plastic hooks (23), thereby driving the upper mold (2) to move along the mold opening direction.

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