Injection mold for automobile ornament

Abstract

The invention relates to an injection mold for automobile ornaments. The injection mold comprises a lower injection mold body and an upper injection mold body. The upper injection mold comprises an upper mold base and an upper mold core; the lower injection mold comprises a lower mold base and a lower mold core; the lower injection mold further comprises a first core pulling assembly, a second core pulling assembly and a first driving mechanism; the upper mold core, the lower mold core, the first core-pulling assembly and the second core-pulling assembly form an injection molding cavity for molding the automobile ornament during mold closing; the first core-pulling assembly comprises a first core-pulling seat, a first core-pulling block and a first core-pulling column; the first core-pulling seat is provided with a forming insertion hole structure; the upper mold core is provided with a forming upper part; the first core-pulling block is provided with a forming lower part; the first core-pulling seat is provided with a first sliding rail; the first core-pulling block is provided with a first sliding chute; the first core pulling seat is provided with a first spring; a first limiting mechanism is also arranged between the first core-pulling seat and the first core-pulling block; and the first core-pulling seat is provided with a second spring. The injection molding device has the effect of achieving injection molding of the automobile ornament.

Description

Technical Field

[0001] The present application relates to the technical field of injection molds, and in particular to an injection mold for automobile accessories. Background Art

[0002] Injection molds are tools for producing plastic products. They inject heated and melted plastic into the mold, and after cooling and solidification, a molded product is obtained. In the production process of automotive accessories, specific injection molds are required to adapt to the automotive accessories to be produced.

[0003] Reference Figure 1 and Figure 2 , an automobile accessory, comprising a plastic chassis 1, a mounting socket 2 arranged on the top of the plastic chassis 1, a mounting piece 11 connected to the side edge of the plastic chassis 1, and two plastic conduits 3 symmetrically arranged on the top of the plastic chassis 1. The mounting socket 2 and the mounting piece 11 are symmetrically arranged about the symmetry plane of the two plastic conduits 3. The plastic conduit 3 is L-shaped and comprises a first conduit 31 and a second conduit 32. The second conduit 32 comprises a first tube portion 321 and a second tube portion 322 along a direction away from the first conduit 31. Among them, the first tube portion 321 is provided with a conduit annular groove 3211. The width dimension of the mounting piece 11 gradually increases along a direction away from the plastic chassis 1. The mounting piece 11 and the circumferential side wall of the plastic chassis 1 form a notch groove 12. A metal plug rod 4 is arranged in the mounting socket 2, and the metal plug rod 4 comprises a horizontally arranged pin portion 41 and a built-in portion 42 connected to the pin portion 41 and arranged on the inner side of the mounting socket 2. When performing injection molding of the above-mentioned automotive accessories, since the plastic conduit 3 is provided with a conduit annular groove 3211 and a notch groove 12 is provided between the mounting plate 11 and the plastic chassis 1, the core pulling structure in a single direction will interfere with the structure at the conduit annular groove 3211, making it impossible for the core pulling structure in a single direction to meet the core pulling requirements of the above-mentioned plastic conduit 3.

[0004] In view of the above-mentioned related technologies, the inventor believes that it is necessary to provide an injection mold that can be applied to the above-mentioned automobile accessories injection molding process. Summary of the invention

[0005] In order to realize the injection molding of the above-mentioned automobile accessories, the present application provides an injection mold for automobile accessories.

[0006] The injection mold of an automobile decoration provided in this application adopts the following technical solution: An injection mold for automobile accessories, comprising an injection lower mold and an injection upper mold; the injection upper mold comprises an upper mold base and an upper mold core installed on the upper mold base; the injection lower mold comprises a lower mold base and a lower mold core installed on the lower mold base; the injection lower mold also comprises a first core pulling assembly installed on the lower mold base and corresponding to two plastic tubes one by one, a second core pulling assembly installed on the lower mold base and corresponding to a mounting socket, and a first driving mechanism that drives the first core pulling assembly to move; the upper mold core, the lower mold core, the first core pulling assembly and the second core pulling assembly constitute an injection molding cavity for molding automobile accessories when the mold is closed; the first core pulling assembly comprises a first core pulling seat, a first core pulling block obliquely slidably installed on the first core pulling seat, and a first core pulling column vertically slidably installed on the first core pulling seat and used for molding a notch groove; the first core pulling seat is provided with a A forming socket structure for the second tube portion; the upper mold core has a forming upper portion for forming the first tube portion; the first core pulling block has a forming lower portion for forming the first tube portion and cooperating with the forming upper portion; the first core pulling seat has a first slide rail arranged upwardly and obliquely along the core pulling direction, and the first core pulling block has a first slide groove cooperating with the first slide rail; the first core pulling seat is provided with a first spring, and the first spring drives the first core pulling block to always have a tendency to slide downward along the first slide rail; a first limiting mechanism for limiting the sliding range of the first core pulling block is also provided between the first core pulling seat and the first core pulling block; the top of the first core pulling column abuts against the injection upper mold, and the first core pulling seat is provided with a second spring that drives the first core pulling column to lift up, and when the injection mold of the automotive trim is opened, the second spring drives the first core pulling column to disengage from the notch groove.

[0007] By adopting the above technical scheme, after the automobile accessories are molded in the injection molding cavity, the upper mold base moves upward relative to the lower mold base, the molded upper part is separated from the upper half of the catheter ring groove, and the second spring pushes the first core pulling column upward, so that the first core pulling column is separated from the notch groove; the setting of the first spring enables the first core pulling block to move downward relative to the first core pulling seat when the first core pulling assembly is core pulling, so that the molding lower part moves vertically downward relative to the catheter ring groove and separates from the lower half of the catheter ring groove; the setting of the first limiting mechanism enables the first core pulling seat to drive the first core pulling block to move in the core pulling direction under the action of the first driving mechanism after the molding lower part is separated from the lower half of the catheter ring groove; the setting of the second core pulling assembly enables the second core pulling assembly to be separated from the mounting socket along the core pulling direction when the mold is opened; the injection mold for automobile accessories provided in the present application can realize the core pulling action of the plastic catheter, thereby realizing the injection molding of the above-mentioned automobile accessories.

[0008] Optionally, the lower model core is provided with a limiting column on one side of the first core pulling seat, and the limiting column is provided with a limiting protrusion on the side facing the first core pulling seat; the first core pulling block has a vertical slide groove for arranging the limiting protrusion and a guide slide groove connected to the top of the vertical slide groove, and the guide slide groove is located on the side of the vertical slide groove that is away from the core pulling direction; when the molding lower part is detached from the first tube part, the limiting protrusion is detached from the vertical slide groove and faces the guide slide groove.

[0009] By adopting the above technical scheme, when opening the mold, the first core pulling seat moves toward the core pulling direction under the drive of the first driving mechanism, and the setting of the limiting protrusion enables the side wall of the vertical slide groove of the first core pulling block to abut the limiting protrusion, and under the drive of the limiting protrusion, the first core pulling block can move downward along the vertical slide groove relative to the first core pulling seat, so that the lower molded part is disengaged downward from the catheter ring groove; when the limiting protrusion is disengaged from the vertical slide groove, the setting of the guide slide groove enables the first core pulling block to move synchronously with the first core pulling seat in the core pulling direction without interfering with the limiting column.

[0010] Optionally, the first limiting mechanism includes a first limiting groove opened in the first core pulling seat and parallel to the first slide rail, and a first limiting column arranged on the first core pulling block and cooperating with the first limiting groove.

[0011] By adopting the above technical scheme, the specific structure of the first core pulling assembly is disclosed, and the arrangement of the first limiting groove and the first limiting column enables the first limiting groove to abut against the first limiting column at the end facing away from the core pulling direction when the first core pulling seat moves toward the core pulling direction, thereby driving the first core pulling block to move synchronously with the first core pulling seat in the core pulling direction.

[0012] Optionally, the first core pulling block is provided with a first arrangement groove for arranging the first spring, the first arrangement groove is parallel to the first slide rail, and the first core pulling seat is provided with a first plug column which is inserted into the first arrangement groove and is used for sleeve mounting of the first spring.

[0013] By adopting the above technical solution, the setting of the first arrangement groove enables the first spring to drive the first core pulling block to move downward relative to the first core pulling seat when the mold is opened; the setting of the first plug column makes the stability of the first spring in the compression / extension process ideal, which helps to improve the stability of the first spring driving the first core pulling block to move.

[0014] Optionally, the first core pulling column includes a second main body, a second sliding portion, a second forming portion arranged at the bottom of the second sliding portion and used for forming a notch groove, and a second driving plate connected to the top of the second main body; the first core pulling seat is provided with an installation groove body for arranging the first core pulling column, and the installation groove body includes a sliding groove body for allowing the second sliding portion to slide up and down and a driving groove body for allowing the second driving plate to slide down; the bottom surface of the driving groove body is provided with a spring arrangement groove for arranging the second spring; a limit plate for limiting the detachment of the first core pulling column is installed on the top of the first core pulling seat.

[0015] By adopting the above technical scheme, the specific structure of the first core-pulling column and the first core-pulling seat is disclosed; the setting of the second forming part can realize the molding of the notch groove; the setting of the second spring enables the second spring to push the first core-pulling column upward when the mold is opened, thereby separating the second forming part from the notch groove; the cooperation between the second sliding part and the sliding groove body and the cooperation between the second driving plate and the driving groove body enables the second spring to drive the second sliding part and the second driving plate to move upward along the sliding groove body and the driving groove body respectively when the mold is opened, which helps to improve the stability of the first core-pulling column when it moves upward; the setting of the limit plate ensures that the second spring will not separate from the first core-pulling seat when driving the first core-pulling column to move upward.

[0016] Optionally, the first driving mechanism includes a first driving block slidably installed on the lower die base along the core pulling direction of the first core pulling assembly, a driving connecting rod connected to the first driving block, and a driving cylinder installed on the lower die base and used to drive the first driving block to move; the driving connecting rod has a piston rod groove for inserting the piston rod of the driving cylinder; the two first core pulling seats are fixedly mounted on the first driving block.

[0017] By adopting the above technical scheme, the specific structure of the first driving mechanism is disclosed. When opening the mold, the driving cylinder can drive the first driving block to move toward the core pulling direction of the first core pulling assembly. Since the two first core pulling seats are fixedly installed on the first driving block, the two first core pulling seats can move synchronously with the first driving block to realize the core pulling action; the setting of the piston rod groove makes the piston rod of the driving cylinder always keep the abutment position with the driving connecting rod consistent during the extension / contraction process, which helps to improve the stability of the driving cylinder when driving the first driving block to move.

[0018] Optionally, both upper and lower sides of the piston rod of the driving cylinder are provided with limiting planes; the limiting plane located on the upper side is in contact with the inner top surface of the piston rod groove, and the limiting plane located on the lower side is in contact with the inner bottom surface of the piston rod groove.

[0019] By adopting the above technical solution, the cooperation between the limiting plane and the piston rod groove ensures that the piston rod of the driving cylinder will not rotate during the extension / contraction process.

[0020] Optionally, the first driving block is provided with a first clamping surface on a side facing away from the first core pulling seat; the upper die seat is provided with a first locking module, and the first locking module has a first clamping structure cooperating with the first clamping surface.

[0021] By adopting the above technical solution, the cooperation between the first clamping surface and the first clamping structure enables the first locking module to fix the first driving block on the lower mold base when the mold is closed, thereby reducing the probability of the first driving block moving during injection molding.

[0022] Optionally, the second core pulling assembly includes a second core pulling seat slidably installed along the core pulling direction and a second core pulling block installed on the second core pulling seat; the end of the second core pulling block is provided with a mounting hole for installing the pin part of the metal plug rod; the second core pulling block is also provided with a supporting boss for supporting the built-in part of the metal plug rod.

[0023] By adopting the above technical scheme, the specific structure of the second core pulling assembly is disclosed, and the pin part can be installed in the mounting socket, so that the metal plug rod can be fixed in the mounting socket during injection molding, and the pin part can be detached from the mounting socket when the mold is opened; the setting of the supporting boss enables the metal plug rod to be installed in the second core pulling block to maintain a specific position.

[0024] Optionally, the upper mold base is equipped with a driving inclined rod for driving the second core pulling seat to move when opening the mold; the second core pulling seat is provided with a driving through groove for arranging the driving inclined rod; the inner wall of the driving through groove is provided with a limit arrangement groove, a limit rod slidably installed in the limit arrangement groove, and an elastic member installed in the limit arrangement groove and used to drive the limit rod to always extend out of the limit arrangement groove; a guide inclined surface is provided on the side of the limit rod facing the opening of the driving through groove and an abutment plane is provided on the side of the opening facing away from the driving through groove.

[0025] By adopting the above technical scheme, when the mold is opened, the upper mold base moves upward relative to the lower mold base, and the driving inclined rod can slide in the driving groove and abut the limiting plane of the limiting rod to drive the second core pulling seat to move in the core pulling direction; the setting of the guide inclined surface and the elastic part enables the driving inclined rod to abut the guide inclined surface to squeeze the elastic part when the mold is closed, and the driving inclined rod can slide over the guide inclined surface and move toward the inner side of the driving groove, so that when the mold is opened, the driving inclined rod can abut against the limiting plane.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. An injection mold for an automobile decoration, wherein a first core pulling assembly and a first driving mechanism are installed on a lower mold base, and when the automobile decoration is molded in an injection mold cavity and the mold is opened, the first core pulling column moves upward under the action of a second spring and is separated from the notch groove; the first spring drives the first core pulling block to move downward, so that the molded lower part is separated from the lower half of the conduit ring groove, and under the action of the first driving mechanism and the first limiting mechanism, the first core pulling block and the first core pulling seat move synchronously in the core pulling direction of the first core pulling assembly and are separated from the automobile decoration; the second core pulling assembly is separated from the mounting socket; thereby, the core pulling action of the automobile decoration can be realized, thereby realizing the injection molding of the automobile decoration; 2. By arranging a limiting column on the lower mold core, the limiting protrusion of the limiting column can abut against the vertical slide groove of the first core pulling block, so that when the mold is opened, the first core pulling block moves downward relative to the first core pulling seat under the drive of the limiting protrusion, so that the lower molded part is separated downward from the conduit ring groove; 3. By setting a first limiting mechanism between the first core pulling seat and the first core pulling block, the first limiting groove cooperates with the first limiting column, so that when the mold is opened, the end of the first limiting groove facing away from the core pulling direction can abut against the first limiting column, thereby driving the first core pulling block to move synchronously with the first core pulling seat in the core pulling direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the automobile decoration in the embodiment of the present application.

[0028] Figure 2 It is a cross-sectional schematic diagram of the automobile decoration in the embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the overall structure of the injection mold of the automobile decoration in the embodiment of the present application.

[0030] Figure 4 It is a structural schematic diagram of the injection molding upper mold in an embodiment of the present application.

[0031] Figure 5 It is a structural schematic diagram of the lower injection mold in the embodiment of the present application.

[0032] Figure 6 It is a structural schematic diagram of the first core pulling assembly in the embodiment of the present application.

[0033] Figure 7 It is a cross-sectional schematic diagram of the cooperation between the molded upper part and the molded lower part in the embodiment of the present application.

[0034] Figure 8 It is a cross-sectional schematic diagram of the cooperation between the first core pulling column and the first core pulling seat in the embodiment of the present application.

[0035] Fig. 9It is a cross-sectional schematic diagram of the cooperation between the first core-pulling column and the limiting plate in the embodiment of the present application.

[0036] Fig.10 It is a schematic structural diagram of the sliding cooperation between the first core pulling block and the first core pulling seat in the embodiment of the present application.

[0037] Fig.11 It is a schematic structural diagram of the cooperation between the limiting column and the first core-pulling block in the embodiment of the present application.

[0038] Fig.12 It is a cross-sectional schematic diagram of the cooperation between the first limiting column and the first limiting groove in the embodiment of the present application.

[0039] Fig.13 It is a structural schematic diagram of the first driving mechanism in an embodiment of the present application.

[0040] Fig.14 It is a schematic diagram of the structure of the driving cylinder and the driving connecting rod in the embodiment of the present application.

[0041] Fig.15 It is a structural schematic diagram of the second core pulling assembly in the embodiment of the present application.

[0042] Fig.16 It is a cross-sectional schematic diagram of the cooperation between the limiting rod and the driving through slot in the embodiment of the present application.

[0043] Fig.17 It is a schematic structural diagram of the second core pulling assembly and the metal insertion rod in the embodiment of the present application.

[0044] Description of the accompanying drawings: 1. plastic chassis; 11. mounting plate; 12. notch groove; 2. mounting socket; 3. plastic conduit; 31. first conduit; 32. second conduit; 321. first tube portion; 322. second tube portion; 3211. conduit ring groove; 4. metal plug rod; 41. pin portion; 42. built-in portion; 5. injection lower mold; 51. lower mold seat; 511. first T-shaped slide groove; 512. second T-shaped slide groove; 52. lower mold core; 53. first core pulling assembly; 531. first core pulling seat; 5311. first mounting groove; 53111. first inclined surface; 53112. guide rail mounting groove; 53113. first spring mounting groove; 53114. first limit groove; 5312. molded socket structure; 5313. Forming plug column; 5314, installation slot; 53141, sliding slot; 53142, driving slot; 53143, spring arrangement slot; 5315, second spring; 5316, limit plate; 5317, first slide rail; 5318, first plug column; 5319, first spring; 532, first core-pulling block; 5321, forming lower part; 5322, first slide slot; 5323, first arrangement slot; 5324, vertical slide slot; 5325, guide slide slot; 5326, column mounting hole; 53261, first mounting hole; 53262, second mounting hole; 533, first core-pulling column; 5331, second body; 53311, clearance slot; 5332, second sliding part; 5333, second forming part; 5334 , second driving plate; 5335, first abutting groove; 534, limiting column; 5341, limiting convex block; 535, first limiting column; 5351, first limiting block; 536, first nut; 54, first driving mechanism; 541, first driving block; 5411, first sliding ridge; 5412, first locking surface; 5413, connecting rod mounting groove; 542, driving connecting rod; 5421, connecting rod base; 5422, driving rod; 5423, piston rod groove; 5424, piston jack; 543, driving oil cylinder; 5431, limiting plane; 5432, driving head; 55, second core pulling assembly; 551, second core pulling seat; 5511, second sliding ridge; 5512, second locking surface; 5513, driving through groove ;5514, limit arrangement groove;55141, second sliding groove;55142, second abutment groove;5515, limit rod;55151, limit body;55152, second limit block;55153, elastic arrangement groove;55154, second limit head;55155, guide slope;55156, abutment plane;5516, elastic member;5517, second installation groove;5518, second convex block;552, second core pulling block;5521, second limit groove;5522, pin seat;5523, installation socket;5524, support boss;6, injection upper mold;61, upper mold seat;62, upper mold core;621, molding upper part;63, driving inclined rod;631, inclined rod abutment surface;64, clamping plate;65, first locking module; 651, first locking plate; 652, first abutting surface; 66, second locking module; 661, second locking plate; 662, second abutting surface; 7, injection molding cavity. ; DETAILED DESCRIPTION

[0045] The following is combined with Figure 1-17 This application is described in further detail.

[0046] The present application discloses an injection mold for an automobile decoration. The above-mentioned injection mold for automobile decoration is used for injection molding of automobile decoration. The relevant technical features of automobile decoration in subsequent documents can be referred to Figure 1 and Figure 2 , so it will no longer be quoted separately in subsequent texts. Figure 1 and Figure 2 .

[0047] Reference Figure 3 An injection mold for an automobile trim includes an injection lower mold 5 and an injection upper mold 6 which moves up and down in a vertical direction relative to the injection lower mold 5 .

[0048] Reference Figure 4 and Figure 5 The injection upper mold 6 includes an upper mold base 61, an upper mold core 62 installed on the upper mold base 61, and a driving inclined rod 63 installed on the upper mold base 61. The injection lower mold 5 includes a lower mold base 51, a lower mold core 52 installed on the lower mold base 51, a first core pull assembly 53 installed on the lower mold base 51 and corresponding to two plastic conduits 3, a first driving mechanism 54 that drives the first core pull assembly 53 to move, and a second core pull assembly 55 installed on the lower mold base 51 and corresponding to the mounting socket 2. The upper mold core 62, the lower mold core 52, the first core pull assembly 53, and the second core pull assembly 55 constitute an injection mold cavity 7 for molding automotive accessories when the mold is closed.

[0049] Reference Figure 5 and Figure 6 The first core pulling assembly 53 includes a first core pulling seat 531 slidably mounted on the lower mold seat 51, a first core pulling block 532 obliquely slidably mounted on the first core pulling seat 531, and a first core pulling column 533 vertically slidably mounted on the first core pulling seat 531 and used for forming the notch groove 12.

[0050] Reference Figure 6 and Figure 7The first core-pulling seat 531 is provided with a first installation groove 5311 on the side facing away from the core-pulling direction for sliding installation of the first core-pulling block 532. The bottom of the first installation groove 5311 has a first inclined surface 53111 arranged upwardly and obliquely toward the core-pulling direction, and the bottom of the first core-pulling block 532 is in contact with the first inclined surface 53111. In order to realize the molding of the plastic conduit 3, the first core-pulling seat 531 is provided with a molding socket structure 5312 for molding the second tube portion 322, and a molding plug 5313 for molding the inner wall of the plastic conduit 3 is also arranged in the molding socket structure 5312, and the molding plug 5313 is coaxially arranged with the molding socket structure 5312. The upper model core 62 has a molding upper part 621 for molding the upper half of the first tube part 321, and the first core-pulling block 532 has a molding lower part 5321 for molding the lower half of the first tube part 321. The molding lower part 5321 is located at the lower side of the molding plug 5313 and is directly opposite to the molding plug 5313. When the injection mold of the automotive trim is closed, the molding upper part 621 and the molding lower part 5321 are closed.

[0051] Reference Figure 8 In order to realize the molding of the notch groove 12 of the automobile decoration, the first core pulling seat 531 is provided with an installation groove body 5314 which runs through the upper and lower surfaces and is used for the sliding installation of the first core pulling column 533. The first core pulling column 533 includes a second main body 5331, a second sliding portion 5332 located at the lower side of the second main body 5331, a second molding portion 5333 arranged at the bottom of the second sliding portion 5332 and used for the core pulling notch groove 12, and a second driving plate 5334 connected to the top of the second main body 5331. The second main body 5331, the second sliding portion 5332, the second molding portion 5333 and the second driving plate 5334 are integrally arranged. Among them, the second main body 5331 is directly opposite to the molding plug column 5313, and the second main body 5331 is also provided with a clearance groove 53311 running through the two side walls, so that when the first core pulling column 533 slides up and down in the installation groove body 5314, it will not interfere with the molding plug column 5313.

[0052] Reference Figure 8 and Fig. 9The mounting groove 5314 includes a sliding groove 53141 for the second sliding portion 5332 to slide up and down and a driving groove 53142 for the second driving plate 5334 to slide up and down. In order to enable the second molding portion 5333 to be detached from the notch groove 12 after the automobile decoration is formed, a second spring 5315 for pushing the first core-pulling column 533 upward is also provided in the mounting groove 5314. Among them, a spring arrangement groove 53143 for arranging the second spring 5315 is also provided on the bottom surface of the driving groove 53142. One end of the second spring 5315 abuts against the bottom of the spring arrangement groove 53143 and the other end abuts against the bottom of the second driving plate 5334, so that the first core-pulling column 533 always has a tendency to push upward. In order to prevent the first core-pulling column 533 from detaching from the mounting groove 5314, a limiting plate 5316 is further provided at the top of the mounting groove 5314 of the first core-pulling seat 531, and a first abutting groove 5335 cooperating with the first limiting plate 5316 is also provided on the top of the first driving plate. When the first core-pulling column 533 is pushed upward and the bottom of the first abutting groove 5335 abuts against the bottom of the first limiting plate 5316, the second molding portion 5333 has detached from the notch groove 12.

[0053] Reference Fig.10 and Fig.11 In order to realize that the lower molding part 5321 can be separated from the conduit ring groove 3211 of the first tube part 321 after the automobile decoration is formed, a guide rail installation groove 53112 is provided at the bottom of the first installation groove 5311, and a first spring installation groove 53113 is provided on the side of the first installation groove 5311 facing the core pulling direction. A first slide rail 5317 for sliding the first core pulling seat 531 is installed in the guide rail installation groove 53112, and a first plug column 5318 is installed in the first spring installation groove 53113. The first plug column 5318 is sleeved with a first spring 5319 for driving the first core pulling block 532 to move downward relative to the first core pulling seat 531. A first slide groove 5322 for slidingly cooperating with the first slide rail 5317 is also provided at the bottom of the first core pulling block 532. The first slide groove 5322 is a through groove structure that runs through both sides of the first core pulling block 532. The first core pulling block 532 is also provided with a first arrangement groove 5323 on one side facing the core pulling direction for cooperating with the first spring 5319. When the mold is opened, the first spring 5319 and the first plug 5318 are inserted into the first arrangement groove 5323, and the first spring 5319 drives the first core pulling block 532 to move downward relative to the first core pulling seat 531, so that the molding lower part 5321 is separated from the conduit ring groove 3211 of the first tube part 321.

[0054] Reference Figure 5 , Fig.10 and Fig.11In order to make the first core-pulling seat 531 move along the core-pulling direction, the first core-pulling block 532 can better move downward relative to the first core-pulling seat 531, so that the lower molded part 5321 will not damage the conduit annular groove 3211 when it is separated from the conduit annular groove 3211 of the first tube part 321. A limiting column 534 is also provided on one side of the first core-pulling seat 531, and the limiting column 534 is fixed to the lower mold core 52 by bolts. A limiting protrusion 5341 is provided on the top of the limiting column 534 facing the side of the first core-pulling seat 531, and the limiting protrusion 5341 is a rectangular parallelepiped structure. A vertical slide 5324 for arranging the limiting protrusion 5341 and a guide slide 5325 connected to the top of the vertical slide 5324 are provided on the top of the first core-pulling block 532 and the side directly opposite to the limiting column 534, and the guide slide 5325 extends toward the side opposite to the core-pulling direction.

[0055] Reference Fig.10 and Fig.11 When the first core-pulling seat 531 moves in the core-pulling direction, the end face of the limiting protrusion 5341 facing away from the core-pulling direction abuts against the end face of the vertical slide groove 5324 facing away from the core-pulling direction, so that the first core-pulling block 532 moves vertically downward under the driving of the limiting protrusion 5341, so that the molded lower part 5321 is vertically disengaged from the conduit annular groove 3211 of the first tube part 321. After the molded lower part 5321 is disengaged from the conduit annular groove 3211 of the first tube part 321, the limiting protrusion 5341 is disengaged from the vertical slide groove 5324 and faces the guide slide groove 5325.

[0056] Reference Fig.12 In order to limit the sliding range of the first core pulling block 532 on the first core pulling seat 531, a first limiting mechanism is further provided between the first core pulling block 532 and the first core pulling seat 531. The first limiting mechanism includes a first limiting groove 53114 provided at the bottom of the first mounting groove 5311 and a first limiting column 535 installed on the first core pulling block 532 and cooperating with the first limiting groove 53114. The top of the first limiting column 535 also includes a first limiting block 5351. The diameter of the first limiting block 5351 is greater than the diameter of the first limiting column 535. The diameter of the first limiting column 535 is less than the width of the first limiting groove 53114. The first core-pulling block 532 is provided with a column mounting hole 5326 penetrating the upper and lower surfaces for mounting the first limiting column 535. The column mounting hole 5326 includes a first mounting hole 53261 for mounting the first limiting column 535 and a second mounting hole 53262 for mounting the first limiting block 5351. A first nut 536 for fixing the first limiting column 535 to the first mounting hole 53261 is threadedly mounted on the top of the second mounting hole 53262. When the molded lower portion 5321 is separated from the conduit annular groove 3211 of the first tube portion 321, the first limiting column 535 abuts against the first limiting groove 53114 at one end facing away from the core-pulling direction.

[0057] Reference Figure 4 and Fig.13 The first driving mechanism 54 includes a first driving block 541, a driving connecting rod 542 connected to the first driving block 541, and a driving cylinder 543 installed on the lower die seat 51 and used to drive the first driving block 541 to move. The first driving block 541 is slidably installed on the lower die seat 51 along the core pulling direction of the first core pulling assembly 53. In order to improve the stability of the first driving block 541 sliding on the lower die seat 51, the lower die seat 51 is provided with a first T-shaped slide groove 511 at one end along the core pulling direction, and first sliding ridges 5411 slidingly matched with the first T-shaped slide groove 511 are provided on both sides of the first driving block 541, so that the first driving block 541 can slide along the first T-shaped slide groove 511 when pulling the core. The first driving block 541 is provided with a first locking surface 5412 on the side facing away from the first core pulling seat 531, which is in contact with the upper die seat 61 when closing the mold. The two first core-pulling seats 531 are both fixed to the side of the first driving block 541 that is away from the core-pulling direction by bolts. The first driving block 541 is also provided with a connecting rod installation groove 5413 for installing the driving connecting rod 542.

[0058] Reference Fig.13 and Fig.14 The driving connecting rod 542 is an L-shaped structure as a whole. The driving connecting rod 542 includes a connecting rod base 5421 fixedly installed in the connecting rod installation groove 5413 and a driving rod 5422 vertically connected to the connecting rod base 5421 and connected to the driving cylinder 543. The driving rod 5422 is provided with a piston rod groove 5423 that passes through the two side walls and is used for the piston rod of the driving cylinder 543 to be inserted. The bottom of the piston rod groove 5423 is provided with a piston socket 5424 that passes through the two side surfaces of the driving rod 5422 along the core pulling direction.

[0059] Reference Fig.13 and Fig.14 The upper and lower sides of the piston rod of the driving cylinder 543 are provided with limiting planes 5431. The limiting plane 5431 on the upper side is in contact with the inner top surface of the piston rod groove 5423, and the limiting plane 5431 on the lower side is in contact with the inner bottom surface of the piston rod groove 5423. The end of the piston rod of the driving cylinder 543 is provided with a driving head 5432 which is arranged in the piston socket 5424 and is used to fix the driving rod 5422 to the piston rod of the driving cylinder 543.

[0060] Reference Figure 4 and Fig.15The second core pulling assembly 55 includes a second core pulling seat 551 slidably mounted on the lower die seat 51 along the core pulling direction and a second core pulling block 552 detachably mounted on the second core pulling seat 551. In order to improve the sliding stability of the second core pulling seat 551 on the lower die seat 51, the lower die seat 51 is provided with a second T-shaped slide groove 512 for arranging the second core pulling seat 551 along the core pulling direction, and second sliding ridges 5511 are provided on both sides of the second core pulling seat 551 to slide with the second T-shaped slide groove 512, so that the second core pulling seat 551 can slide along the second T-shaped slide groove 512 during core pulling. The second core pulling seat 551 is provided with a second installation groove 5517 for arranging the second core pulling block 552 at one end facing away from the core pulling direction, and two opposite second protrusions 5518 are provided at both ends of the opening of the second installation groove 5517. The second core pulling seat 551 is provided with a second locking surface 5512 which is tilted downward on a side facing away from the second core pulling seat 551 and is in contact with the upper mold seat 61 during mold closing.

[0061] Reference Fig.15 and Fig.16 The bottom of the second core-pulling seat 551 is provided with a driving groove 5513, which is a U-shaped groove structure that penetrates the upper and lower surfaces and opens toward the core-pulling direction. The inner wall of the driving groove 5513 is symmetrically provided with a limiting arrangement groove 5514, in which a limiting rod 5515 and an elastic member 5516 are slidably installed. The limiting rod 5515 includes a limiting body 55151 and a second limiting block 55152 arranged at the bottom of the limiting body 55151. The limiting body 55151 is provided with an elastic arrangement groove 55153 for inserting the elastic member 5516. The limiting arrangement groove 5514 includes a second sliding groove 55141 for sliding the limiting body 55151 and a second abutting groove 55142 that is connected to the second sliding groove 55141 and is used for arranging the second limiting block 55152. One end of the elastic member 5516 abuts against the bottom surface of the elastic arrangement groove 55153 and the other end abuts against the second core puller 551, so that the second limit block 55152 always has a tendency to abut against the end surface of the second abutting groove 55142 on one side facing the driving through groove 5513. The limit rod 5515 also has a second limit head 55154 extending from the limit arrangement groove 5514 to the driving through groove 5513. The second limit head 55154 is provided with a guide inclined surface 55155 on the side facing the opening of the driving through groove 5513 and an abutting plane 55156 on the side facing away from the opening of the driving through groove 5513.

[0062] Reference Fig.15 and Fig.17The second core-pulling block 552 is detachably mounted in the second mounting groove 5517. The second core-pulling block 552 is also provided with a second limiting groove 5521 for engaging with the second protrusion 5518, so that when the second core-pulling seat 551 moves toward the core-pulling direction, the second core-pulling seat 551 can drive the second core-pulling block 552 to move toward the core-pulling direction. The end of the second core-pulling block 552 is provided with a pin seat 5522. The pin seat 5522 is provided with a mounting socket 5523 for mounting the pin portion 41 of the metal plug rod 4 at one end facing away from the core-pulling direction. In this embodiment, the number of the mounting sockets 5523 is four and they are arranged in parallel along the width direction of the pin seat 5522. The second core pulling block 552 is further provided with a supporting protrusion 5524 for supporting the built-in portion 42 of the metal plug rod 4 on the end surface on the side facing away from the core pulling direction. In this embodiment, there are three supporting protrusions 5524 which are arranged in parallel along the width direction of the second core pulling block 552.

[0063] Reference Figure 4 and Fig.16 The injection upper mold 6 also includes a driving inclined rod 63 installed on the upper mold base 61 and arranged downwardly in an inclined direction toward the core pulling direction of the second core pulling assembly 55, and a clamping plate 64 for locking the second core pulling block 552 in the second mounting groove 5517. The driving inclined rod 63 is provided with an inclined rod abutting surface 631 on the side facing the core pulling direction. When the mold is opened, the inclined rod abutting surface 631 abuts against the abutting plane 55156 of the second limit head 55154. When the upper mold base 61 moves upward, the driving inclined rod 63 can drive the second core pulling base 551 to move toward the core pulling direction. When the mold is closed, the upper mold base 61 moves downward, and the end of the driving inclined rod 63 facing away from the inclined rod abutment surface 631 abuts against the guide inclined surface 55155 of the second limit head 55154, so that the limit rod 5515 slides toward the limit arrangement groove 5514, thereby enabling the driving inclined rod 63 to slide through the second limit head 55154 and move toward the bottom of the driving through groove 5513.

[0064] Reference Figure 4 and Figure 5The upper mold base 61 is also provided with a first locking module 65 for abutting and cooperating with the first driving block 541 and a second locking module 66 for abutting and cooperating with the second core pulling seat 551. The first locking module 65 has a first locking structure cooperating with the first locking surface 5412, and the second locking module 66 has a second locking structure cooperating with the second locking surface 5512. The first locking structure includes a first locking plate 651 installed on the first locking module 65 and a first abutting surface 652 arranged on the first locking plate 651 and tilted downward in the core pulling direction of the first core pulling assembly 53; the second locking structure includes a second locking plate 661 installed on the second locking module 66 and a second abutting surface 662 arranged on the second locking plate 661 and tilted downward in the core pulling direction of the second core pulling assembly 55. When the injection mold of the automotive trim is in mold closing, the first locking surface 5412 abuts against the first abutting surface 652, and the second locking surface 5512 abuts against the second abutting surface 662.

[0065] Reference Figures 1 to 17 The implementation principle of the injection mold of an automobile decoration part in the embodiment of the present application is as follows: when the injection mold of the automobile decoration part is closed, the injection upper mold 6 moves downward relative to the injection lower mold 5, and the molding upper part 621 of the upper mold seat 61 is closed with the molding lower part 5321 of the first core pulling block 532. After the injection is completed and when the mold is opened, the injection upper mold 6 moves upward relative to the injection lower mold 5, and the driving cylinder 543 drives the first core pulling seat 531 to move toward the core pulling direction of the first core pulling assembly 53. Under the action of the first spring 5319 and the limiting column 534, the molding lower part 5321 moves downward and disengages from the conduit ring groove 3211; then, under the action of the first limiting mechanism, the first core pulling block 532 and the first core pulling seat 531 move synchronously in the core pulling direction; the driving inclined rod 63 drives the second core pulling seat 551 to move toward the core pulling direction of the second core pulling assembly 55, so that the pin portion 41 is disengaged from the mounting socket 5523.

[0066] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An injection mold for an automobile decoration, comprising an injection lower mold (5) and an injection upper mold (6); the injection upper mold (6) comprises an upper mold base (61) and an upper mold core (62) mounted on the upper mold base (61); the injection lower mold (5) comprises a lower mold base (51) and a lower mold core (52) mounted on the lower mold base (51); characterized in that: The injection lower mold (5) also includes a first core pulling assembly (53) installed on the lower mold base (51) and corresponding to the two plastic conduits (3), a second core pulling assembly (55) installed on the lower mold base (51) and corresponding to the mounting socket (2), and a first driving mechanism (54) for driving the first core pulling assembly (53) to move; the upper mold core (62), the lower mold core (52), the first core pulling assembly (53) and the second core pulling assembly (55) form an injection mold cavity (7) for molding automotive accessories when the mold is closed; The first core pulling assembly (53) comprises a first core pulling seat (531), a first core pulling block (532) obliquely slidably mounted on the first core pulling seat (531), and a first core pulling column (533) vertically slidably mounted on the first core pulling seat (531) and used for forming the notch groove (12); the first core pulling seat (531) is provided with a forming socket structure (5312) for forming the second tube portion (322); the upper mold core (62) has a forming upper portion (621) for forming the first tube portion (321); the first core pulling block (532) The first core pulling seat (531) has a first slide rail (5317) arranged upwardly and inclined along the core pulling direction, and the first core pulling block (532) has a first slide groove (5322) cooperating with the first slide rail (5317); the first core pulling seat (531) is provided with a first spring (5319), and the first spring (5319) drives the first core pulling block (532) to always have a first slide rail (5317) arranged upwardly and inclined along the core pulling direction. The first core pulling seat (531) has a tendency to slide downward; a first limiting mechanism for limiting the sliding range of the first core pulling block (532) is also provided between the first core pulling seat (531) and the first core pulling block (532); the top of the first core pulling column (533) abuts against the injection upper mold (6), and the first core pulling seat (531) is provided with a second spring (5315) for driving the first core pulling column (533) to lift up, and when the injection mold of the automotive trim is opened, the second spring (5315) drives the first core pulling column (533) to disengage from the notch groove (12).

2. The injection mold for automobile accessories according to claim 1, characterized in that: The lower mold core (52) is provided with a limiting column (534) on one side of the first core pulling seat (531), and the limiting column (534) is provided with a limiting protrusion (5341) on the side facing the first core pulling seat (531); the first core pulling block (532) has a vertical slide groove (5324) for arranging the limiting protrusion (5341) and a guide slide groove (5325) connected to the top of the vertical slide groove (5324), and the guide slide groove (5325) is located on the side of the vertical slide groove (5324) that is away from the core pulling direction; when the molding lower part (5321) is separated from the first tube part (321), the limiting protrusion (5341) is separated from the vertical slide groove (5324) and is opposite to the guide slide groove (5325).

3. The injection mold for automobile accessories according to claim 1, characterized in that: The first limiting mechanism includes a first limiting groove (53114) opened in the first core pulling seat (531) and parallel to the first slide rail (5317), and a first limiting column (535) arranged on the first core pulling block (532) and cooperating with the first limiting groove (53114).

4. The injection mold for automobile accessories according to claim 1, characterized in that: The first core pulling block (532) is provided with a first arrangement groove (5323) for arranging the first spring (5319), and the first arrangement groove (5323) is parallel to the first slide rail (5317). The first core pulling seat (531) is installed with a first plug (5318) which is inserted into the first arrangement groove (5323) and is used for the first spring (5319) to be mounted.

5. The injection mold for automobile accessories according to claim 1, characterized in that: The first core-pulling column (533) comprises a second main body (5331), a second sliding portion (5332), a second forming portion (5333) arranged at the bottom of the second sliding portion (5332) and used for forming the notch groove (12), and a second driving plate (5334) connected to the top of the second main body (5331); the first core-pulling seat (531) is provided with an installation groove body (5314) for arranging the first core-pulling column (533), and the installation groove body (531 4) includes a sliding groove body (53141) for allowing the second sliding part (5332) to slide up and down and a driving groove body (53142) for allowing the second driving plate (5334) to slide up and down; the bottom surface of the driving groove body (53142) is provided with a spring arrangement groove (53143) for arranging the second spring (5315); the top of the first core pulling seat (531) is installed with a limit plate (5316) for limiting the detachment of the first core pulling column (533).

6. The injection mold for automobile accessories according to claim 1, characterized in that: The first driving mechanism (54) comprises a first driving block (541) slidably mounted on the lower die base (51) along the core pulling direction of the first core pulling assembly (53), a driving connecting rod (542) connected to the first driving block (541), and a driving cylinder (543) mounted on the lower die base (51) and used to drive the first driving block (541) to move; the driving connecting rod (542) has a piston rod groove (5423) for inserting the piston rod of the driving cylinder (543); the two first core pulling seats (531) are fixedly mounted on the first driving block (541).

7. The injection mold for automobile accessories according to claim 6, characterized in that: Limiting planes (5431) are provided on both the upper and lower sides of the piston rod of the driving cylinder (543); the limiting plane (5431) located on the upper side is in contact with the inner top surface of the piston rod groove (5423), and the limiting plane (5431) located on the lower side is in contact with the inner bottom surface of the piston rod groove (5423).

8. The injection mold for automobile accessories according to claim 6, characterized in that: The first driving block (541) is provided with a first locking surface (5412) on the side facing away from the first core-pulling seat (531); the upper die seat (61) is provided with a first locking module (65), and the first locking module (65) has a first locking structure that cooperates with the first locking surface (5412).

9. The injection mold for automobile accessories according to claim 1, characterized in that: The second core pulling assembly (55) comprises a second core pulling seat (551) slidably installed along the core pulling direction and a second core pulling block (552) installed on the second core pulling seat (551); the end of the second core pulling block (552) is provided with a mounting hole (5523) for mounting the pin portion (41) of the metal plug rod (4); the second core pulling block (552) is also provided with a supporting boss (5524) for supporting the built-in portion (42) of the metal plug rod (4).

10. The injection mold for automobile accessories according to claim 9, characterized in that: The upper mold base (61) is provided with a driving inclined rod (63) for driving the second core pulling seat (551) to move when the mold is opened; the second core pulling seat (551) is provided with a driving groove (5513) for arranging the driving inclined rod (63); the inner wall of the driving groove (5513) is provided with a limit arrangement groove (5514), a limit rod (5515) slidably installed in the limit arrangement groove (5514), and an elastic member (5516) installed in the limit arrangement groove (5514) and used to drive the limit rod (5515) to always extend out of the limit arrangement groove (5514); a guiding inclined surface (55155) is provided on one side of the limit rod (5515) facing the opening of the driving groove (5513), and an abutting plane (55156) is provided on the side of the opening facing away from the driving groove (5513).

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