Single-color injection mold for automobile plastic parts and method of using the same

Abstract

The present invention discloses a single-color injection mold for automotive plastic parts, comprising an upper mold, a lower mold, a conversion shell, an injection nozzle, an adjustment conversion mechanism, an injection transfer mechanism, a quick-release mechanism, an adjustment rod, and a rotating shaft. The upper mold is provided with an injection channel, the top of the upper mold is fixedly connected to the conversion shell, the conversion shell is provided with an injection nozzle, the conversion shell has two through holes, one of which is connected to the injection channel, and the other is connected to the injection nozzle. The conversion shell is rotatably connected to the rotating shaft, the adjusting rod is slidably connected to the rotating shaft, the bottom of the adjusting rod is fixedly connected to a block, the block is clamped to the rotating shaft, a docking block is fixedly connected to the rotating shaft, a connecting rod is slidably connected to the docking block, and the connecting rod is provided with a quick-release mechanism. The present invention relates to a single-color injection mold for automotive plastic parts and a method for using the same, which has the characteristic of not requiring shutdown processing when the injection channel is blocked.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile plastic part production, in particular to a single-color injection mold for automobile plastic parts and a use method thereof. Background Art

[0002] Automotive plastic parts are the various units that make up the entire automobile and are products that serve the automobile. There are many types of automotive plastic parts, many of which are produced by injection molding. For example, the utility model patent with announcement number CN204869491U discloses an injection mold for manufacturing automotive reflectors. The mold comprises a top plate, a female mold plate, a male mold plate, a pad, and a bottom plate arranged in order from top to bottom. A positioning ring is provided at the middle position of the upper surface of the top plate. The female mold plate is provided with a rubber port bushing that communicates with the positioning ring and a nozzle that communicates with the rubber port bushing. The male mold plate is provided with a flow channel that communicates with the nozzle. The bottom of the flow channel is provided with a diverter cone that extends into the nozzle, and a shut-off valve is provided at the top of the flow channel. By providing a shut-off valve at the top of the flow channel, the injection mold can control the amount of injection solution according to the curvature and thickness of the reflector product, thereby ensuring the yield rate.

[0003] However, when the existing injection mold is actually used, the molten material in the injection nozzle is cooled, which is easy to cause the injection nozzle to be blocked. Usually, the mold needs to be shut down and then unblocked, which is very inconvenient. Therefore, it is necessary to improve it. Summary of the Invention

[0004] The purpose of the present invention is to provide a single-color injection mold for automobile plastic parts and a method of using the same in order to solve the above problems, thereby solving the problems mentioned in the background technology.

[0005] In order to solve the above problems, the present invention provides a technical solution:

[0006] A single-color injection mold for automobile plastic parts and a method of using the same, comprising an upper mold, a lower mold, a conversion shell, an injection nozzle, an adjustment conversion mechanism, an injection transfer mechanism, a quick-release mechanism, an adjustment rod and a rotating shaft, wherein the upper mold is provided with an injection flow channel, the top of the upper mold is fixedly connected to the conversion shell, the injection nozzle is provided on the conversion shell, two through holes are provided on the conversion shell, one of the through holes is communicated with the injection flow channel, and the other through hole is communicated with the injection nozzle, the conversion shell is rotatably connected to the rotating shaft, the adjusting rod is slidably connected to the rotating shaft, the bottom of the adjusting rod is fixedly connected to a block, the block is clamped with the rotating shaft, the rotating shaft is fixedly connected to a docking block, the docking block is slidably connected to a connecting rod, the connecting rod is provided with a quick-release mechanism, the connecting rod is provided with an injection transfer mechanism, and the top of the conversion shell is provided with an adjustment conversion mechanism;

[0007] The injection molding transfer mechanism includes a center tube, a connecting nozzle, a support block, a fixed block, a guide rod, a limit plate, a second spring and a sealing sleeve, the center tube is fixedly connected to the connecting rod, the outer sliding sleeve of the center tube is connected to two symmetrically distributed connecting nozzles, the outer side of each connecting nozzle is fixedly connected to a sealing sleeve, the sealing sleeve is slidably connected to the through hole, the outer side of the center tube is fixedly connected to the support block, the outer side of the connecting nozzle is fixedly connected to the fixed block, the inner side of the fixed block is slidably connected to the guide rod, one end of the guide rod is fixedly connected to the support block, the other end of the guide rod is fixedly connected to the limit plate, the limit plate contacts the fixed block, the outer side of the guide rod is connected to the second spring, one end of the second spring is fixedly connected to the fixed block, and the other end of the second spring is fixedly connected to the support block;

[0008] When the injection molding transfer mechanism is switching, the blocked injection molding transfer mechanism will be subjected to the reaction force of the inner wall of the through hole. At this time, the connecting nozzle slides on the outside of the center tube, and while sliding, it will drive the fixed block to compress the second spring. Then, when the connecting nozzle is completely moved out of the through hole, it can be switched normally. When the other injection molding transfer mechanism rotates to the through hole, the second spring will push the two fixed blocks back to the top, and the fixed blocks will insert the two connecting nozzles into the through hole, and injection molding can be normal.

[0009] Preferably, a knob is fixedly connected to the top of the adjusting rod, and the knob is made of stainless steel.

[0010] Preferably, the quick-release mechanism includes a fixed shaft, a slide, a clamping block, a pressing block and a third spring. The fixed shaft is fixedly connected inside the connecting rod, the slide is slidably connected to the outside of the fixed shaft, the slide is slidably connected to the connecting rod, the clamping block and the pressing block are fixedly connected to the slide, the clamping block and the pressing block are both slidably connected to the connecting rod, the clamping block is clamped to the docking block, and the third spring is sleeved on the outside of the fixed shaft.

[0011] Preferably, one end of the third spring is fixedly connected to the slide plate, and the other end of the third spring is fixedly connected to the inner surface of the connecting rod.

[0012] Preferably, the adjustment conversion mechanism includes a mounting plate, a ring seat, a fixing rod, a sleeve, a first spring, a connecting block, a limit block and a ball bearing. The mounting plate is mounted on the top of the conversion shell by bolts, and the mounting plate is rotatably connected to the adjusting rod. The upper end of the mounting plate is fixedly connected to the ring seat, and the outside of the adjusting rod is fixedly connected to two symmetrically distributed fixing rods. The outside of each fixing rod is slidingly sleeved with a sleeve, and a first spring is arranged in the sleeve, one end of the first spring is fixedly connected to the fixing rod, and the other end of the first spring is fixedly connected to the inner surface of the sleeve, and a connecting block is fixedly connected to the sleeve, and a limit block is fixedly connected to the connecting block, and the limit block and the connecting block are both slidably connected to the ring seat.

[0013] Preferably, a ball is provided on the limit block, and the ball contacts the inner surface of the ring seat.

[0014] The method of using a single-color injection mold for automotive plastic parts includes the following steps:

[0015] Step 1: The upper mold and the lower mold are combined to perform injection molding of the product. The molten material passes through the injection nozzle, the upper through-hole, the injection transfer mechanism on the right, the lower through-hole, and then enters the injection runner. Then, it enters the mold cavity between the upper mold and the lower mold through the injection runner to perform injection molding of the product.

[0016] Step 2: Separate the upper mold and the lower mold to take out the molded product;

[0017] Step 3: When one of the injection molding transfer mechanisms is blocked, just press the two connecting blocks toward the adjusting rod. At this time, the connecting block drives the sleeve to slide outside the fixed rod, compressing the first spring while sliding. Then the adjusting rod passes through the mounting plate and is inserted into the rotating shaft. The block at the bottom of the adjusting rod is simultaneously stuck in the rotating shaft. Then, release the connecting block, and the first spring will return the connecting block to the top and reset it. Then the limit block on the connecting block enters the ring seat, thereby limiting the adjusting rod.

[0018] Step 4: Then turn the knob, the knob drives the adjusting rod to rotate, the adjusting rod drives the rotating shaft to rotate through the block, and the rotating shaft drives the injection transfer mechanism to shift position through the docking block and the connecting rod, so that the injection molding can continue without stopping;

[0019] Step 5: In addition, when the injection molding transfer mechanism is switched, if the blocked injection molding transfer mechanism is subjected to the reaction force of the inner wall of the through hole, the connecting nozzle slides outside the center tube, and while sliding, it drives the fixed block to compress the second spring. Then, when the connecting nozzle is completely moved out of the through hole, the normal switching can be carried out. When the other injection molding transfer mechanism rotates to the through hole, the second spring will push the two fixed blocks back to the top, and the fixed blocks will insert the two connecting nozzles into the through hole, and the injection molding can be carried out normally.

[0020] Step 6: Later, you only need to remove the inspection cover on the side of the conversion shell, and then press the pressing block downward. The pressing block will drive the slide plate to slide in the connecting rod, and the block on the slide plate will separate from the docking block, thereby removing the connecting rod and the blocked injection transfer mechanism, and then dredge it. After dredging, reverse the operation and install the injection transfer mechanism back;

[0021] Step 7: Reinstall the access cover onto the converter housing.

[0022] The beneficial effects of the present invention are as follows: the present invention relates to a single-color injection mold for automobile plastic parts and a method for using the same, which has the characteristic of not requiring shutdown for processing when the injection channel is blocked. In specific use, the present invention has the following beneficial effects:

[0023] First, a conversion shell is added between the original injection nozzle and the runner of the upper mold. Two through holes are set on the conversion shell, and the two through holes are connected to the injection nozzle and the injection runner respectively. Then a rotatable shaft is set in the conversion shell, and a docking block and a connecting rod are set on the outside of the shaft. A quick release mechanism is set in the connecting rod to connect with the docking block, and an injection transfer mechanism is set at the end of the connecting rod. The injection transfer mechanism is used to transition the two through holes on the conversion shell. In this way, by switching the two injection transfer mechanisms, when the injection nozzle is blocked, it can be quickly switched without stopping the machine for maintenance;

[0024] Secondly, by setting an adjustment conversion mechanism on the top of the conversion shell, a rotatable adjustment rod is set in the adjustment conversion mechanism, and the adjustment rod is connected to the rotating shaft through a clamping block. In this way, the injection molding transfer mechanism can only be converted through the adjustment conversion mechanism, thereby preventing the occurrence of improper operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] For ease of explanation, the present invention is described in detail with reference to the following specific implementations and accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 A three-dimensional diagram of the upper mold structure;

[0028] Figure 3 For the present invention Figure 2 A three-dimensional diagram of the lower mold structure;

[0029] Figure 4 For the present invention Figure 1 A magnified cross-sectional view of the local structure;

[0030] Figure 5 For the present invention Figure 4 A magnified view of the adjustment conversion mechanism;

[0031] Figure 6 For the present invention Figure 4 A magnified view of the structure of part A;

[0032] Figure 7 For the present invention Figure 4 Enlarged view of the structure of part B.

[0033] In the figure: 1. Upper mold; 2. Lower mold; 3. Injection molding runner; 4. Conversion shell; 5. Through hole; 6. Injection molding nozzle; 7. Adjustment conversion mechanism; 71. Mounting plate; 72. Ring seat; 73. Fixed rod; 74. Sleeve; 75. First spring; 76. Connecting block; 77. Limit block; 78. Ball; 8. Injection molding transfer mechanism; 81. Center tube; 82. Connecting nozzle; 83. Support block; 84. Fixed block; 85. Guide rod; 86. Limit plate; 87. Second spring; 88. Sealing sleeve; 9. Quick release mechanism; 93. Fixed shaft; 94. Slide plate; 95. Block; 96. Press block; 97. Third spring; 10. Adjustment rod; 11. Knob; 12. Block; 13. Rotating shaft; 14. Docking block; 15. Connecting rod; 16. Inspection cover. DETAILED DESCRIPTION

[0034] like Figure 1-7 As shown, this specific embodiment adopts the following technical solutions: Example

[0035] A single-color injection mold for automotive plastic parts includes an upper mold 1, a lower mold 2, a conversion shell 4, an injection nozzle 6, an adjustment conversion mechanism 7, an injection transfer mechanism 8, a quick release mechanism 9, an adjustment rod 10, and a rotating shaft 13. The upper mold 1 is provided with an injection flow channel 3, the top of the upper mold 1 is fixedly connected to the conversion shell 4, the conversion shell 4 is provided with an injection nozzle 6, and the conversion shell 4 is provided with two through holes 5, one of which is connected to the injection flow channel 3, and the other is connected to the injection nozzle 6. The conversion shell 4 is rotatably connected to a rotating shaft 13, and an adjusting rod 10 is slidably connected to the rotating shaft 13. The bottom of the adjusting rod 10 is fixedly connected to a block 12, and the block 12 is engaged with the rotating shaft 13. A docking block 14 is fixedly connected to the rotating shaft 13, and a connecting rod 15 is slidably connected to the docking block 14. A quick release mechanism 9 is provided in the connecting rod 15, and an injection molding transfer mechanism 8 is provided on the connecting rod 15. The top of the conversion shell 4 is provided with an adjustment conversion mechanism 7.

[0036] The top of the adjusting rod 10 is fixedly connected with a knob 11, which is made of stainless steel. The design of the knob 11 makes it easy to rotate the adjusting rod 10.

[0037] The quick-release mechanism 9 includes a fixed shaft 93, a slide 94, a block 95, a pressing block 96, and a third spring 97. The fixed shaft 93 is fixedly connected to the inside of the connecting rod 15, and the outside of the fixed shaft 93 is slidably connected to the slide 94. The slide 94 is slidably connected to the connecting rod 15. The slide 94 is fixedly connected to the block 95 and the pressing block 96. The block 95 and the pressing block 96 are both slidably connected to the connecting rod 15. The block 95 is engaged with the docking block 14, and the outside of the fixed shaft 93 is sleeved with the third spring 97. By pressing the pressing block 96 downward, the pressing block 96 will drive the slide 94 to slide in the connecting rod 15, and the block 95 on the slide 94 will separate from the docking block 14, thereby removing the connecting rod 15 and the blocked injection transfer mechanism 8, and then dredging can be performed. After dredging, the injection transfer mechanism 8 can be installed back by reverse operation.

[0038] Among them, one end of the third spring 97 is fixedly connected to the slide plate 94, and the other end of the third spring 97 is fixedly connected to the inner surface of the connecting rod 15. Through the design of the third spring 97, the block 95 has a reset function.

[0039] Among them, the injection molding transfer mechanism 8 includes a center tube 81, a connecting nozzle 82, a support block 83, a fixed block 84, a guide rod 85, a limit plate 86, a second spring 87 and a sealing sleeve 88. The center tube 81 is fixedly connected to the connecting rod 15. The outside of the center tube 81 is slidably sleeved with two symmetrically distributed connecting nozzles 82. The outside of each connecting nozzle 82 is fixedly connected with a sealing sleeve 88. The sealing sleeve 88 is slidably connected to the through hole 5. The outside of the center tube 81 is fixedly connected with the support block 83. The outside of the connecting nozzle 82 is fixedly connected with the fixed block 84. The inside of the fixed block 84 is slidably connected with the guide rod 85. One end of the guide rod 85 is fixedly connected to the support block 83. The other end of the guide rod 85 is fixedly connected with the limit plate 86. The limit plate 86 contacts the fixed block 84. The outside of the guide rod 85 is sleeved with a second spring 87. When the injection molding transfer mechanism 8 is switched, the blocked injection molding transfer mechanism 8 will be subjected to the reaction force of the inner wall of the through hole 5. At this time, the connecting nozzle 82 slides on the outside of the central tube 81, and while sliding, it will drive the fixed block 84 to compress the second spring 87. Then, when the connecting nozzle 82 is completely moved out of the through hole 5, it can be switched normally. When the other injection molding transfer mechanism 8 rotates to the through hole 5, the second spring 87 will push the two fixed blocks 84 back to the top, and the fixed blocks 84 will insert the two connecting nozzles 82 into the through hole 5, and normal injection molding can be performed.

[0040] One end of the second spring 87 is fixedly connected to the fixing block 84, and the other end of the second spring 87 is fixedly connected to the supporting block 83. The design of the second spring 87 can assist in resetting the connection nozzle 82.

[0041] The lock body 71 is fixed on the locking cam 76, and the locking cam 76 is fixed on the locking cam 76. The lock body 71 is fixed on the locking cam 76, and the locking cam 76 is fixed on the locking cam 76. By pressing the two connecting blocks 76 toward the adjusting rod 10, the connecting block 76 drives the sleeve 74 to slide outside the fixed rod 73, compressing the first spring 75 while sliding, and then the adjusting rod 10 passes through the mounting plate 71 and is inserted into the rotating shaft 13, and the block 12 at the bottom of the adjusting rod 10 is simultaneously engaged with the rotating shaft 13, then, the connecting block 76 is released, and the first spring 75 pushes the connecting block 76 back to the top and resets it, then the limit block 77 on the connecting block 76 enters the ring seat 72, thereby limiting the adjusting rod 10.

[0042] The limiting block 77 is provided with a ball 78, which contacts the inner surface of the ring seat 72. The design of the ball 78 assists the rotation of the limiting block 77 in the ring seat 72.

[0043] The method of using a single-color injection mold for automotive plastic parts includes the following steps:

[0044] Step 1: The upper mold 1 and the lower mold 2 are combined to perform injection molding of the product. The molten material passes through the injection nozzle 6, the upper through hole 5, the injection transfer mechanism 8 on the right, the lower through hole 5, and then enters the injection runner 3. Then, it enters the mold cavity between the upper mold 1 and the lower mold 2 through the injection runner 3 to perform injection molding of the product.

[0045] Step 2: Separate the upper mold 1 and the lower mold 2 to remove the molded product;

[0046] Step 3: When one of the injection molding transfer mechanisms 8 is blocked, it is only necessary to press the two connecting blocks 76 toward the adjusting rod 10. At this time, the connecting block 76 drives the sleeve 74 to slide outside the fixed rod 73, compressing the first spring 75 while sliding. Then, the adjusting rod 10 passes through the mounting plate 71 and is inserted into the rotating shaft 13. The block 12 at the bottom of the adjusting rod 10 is simultaneously engaged with the rotating shaft 13. Subsequently, the connecting block 76 is released, and the first spring 75 returns the connecting block 76 to the top and resets it. Subsequently, the limiting block 77 on the connecting block 76 enters the ring seat 72, thereby limiting the adjusting rod 10.

[0047] Step 4: Then turn the knob 11, which drives the adjusting rod 10 to rotate. The adjusting rod 10 drives the rotating shaft 13 to rotate through the block 12. The rotating shaft 13 drives the injection transfer mechanism 8 to shift position through the docking block 14 and the connecting rod 15, so that the injection molding can continue without stopping.

[0048] Step 5: In addition, when the injection molding transfer mechanism 8 is switched, when the blocked injection molding transfer mechanism 8 is subjected to the reaction force of the inner wall of the through hole 5, the connecting nozzle 82 slides outside the central tube 81, and while sliding, it drives the fixing block 84 to compress the second spring 87. Then, when the connecting nozzle 82 is completely moved out of the through hole 5, the normal switching can be achieved. When the other injection molding transfer mechanism 8 rotates to the through hole 5, the second spring 87 will push the two fixing blocks 84 back to the top, and the fixing blocks 84 will insert the two connecting nozzles 82 into the through hole 5, and the injection molding can be performed normally.

[0049] Step 6: Later, you only need to remove the inspection cover 16 on the side of the conversion shell 4, and then press the pressing block 96 downward. The pressing block 96 will drive the slide 94 to slide in the connecting rod 15, and the block 95 on the slide 94 will separate from the docking block 14, so that the connecting rod 15 and the blocked injection transfer mechanism 8 can be taken out, and then the blockage can be cleared. After clearing, reverse the operation to install the injection transfer mechanism 8 back;

[0050] Step 7: Reinstall the inspection cover 16 back into the conversion housing 4 .

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A single-color injection mold for automobile plastic parts, comprising an upper mold (1), a lower mold (2), a conversion shell (4), an injection nozzle (6), an adjustment conversion mechanism (7), an injection transfer mechanism (8), a quick release mechanism (9), an adjustment rod (10) and a rotating shaft (13), characterized in that: The upper mold (1) is provided with an injection flow channel (3), the top of the upper mold (1) is fixedly connected to a conversion shell (4), the conversion shell (4) is provided with an injection nozzle (6), the conversion shell (4) is provided with two through holes (5), one of the through holes (5) is communicated with the injection flow channel (3), and the other through hole (5) is communicated with the injection nozzle (6), the conversion shell (4) is rotatably connected with a rotating shaft (13), the rotating shaft (13) is slidably connected with an adjusting rod (10), and the adjusting rod The bottom of (10) is fixedly connected with a block (12), the block (12) is clamped with a rotating shaft (13), the rotating shaft (13) is fixedly connected with a docking block (14), the docking block (14) is slidably connected with a connecting rod (15), the connecting rod (15) is provided with a quick release mechanism (9), the connecting rod (15) is provided with an injection molding transfer mechanism (8), the top of the conversion shell (4) is provided with an adjustment conversion mechanism (7), and the conversion shell (4) is installed with an inspection cover (16); The injection molding transfer mechanism (8) includes a central tube (81), a connecting nozzle (82), a support block (83), a fixed block (84), a guide rod (85), a limit plate (86), a second spring (87) and a sealing sleeve (88). The central tube (81) is fixedly connected to the connecting rod (15). The outer portion of the central tube (81) is slidably sleeved with two symmetrically distributed connecting nozzles (82). The outer portion of each connecting nozzle (82) is fixedly connected to a sealing sleeve (88). The sealing sleeve (88) is slidably connected to the through hole (5). The outer portion of the central tube (81) is fixedly connected to the support block ( 83), the outside of the connecting nozzle (82) is fixedly connected to a fixed block (84), the inside of the fixed block (84) is slidably connected to a guide rod (85), one end of the guide rod (85) is fixedly connected to the support block (83), the other end of the guide rod (85) is fixedly connected to a limit plate (86), the limit plate (86) is in contact with the fixed block (84), the outside of the guide rod (85) is sleeved with a second spring (87), one end of the second spring (87) is fixedly connected to the fixed block (84), and the other end of the second spring (87) is fixedly connected to the support block (83); When the injection molding transfer mechanism (8) is switched, the blocked injection molding transfer mechanism (8) will be subjected to the reaction force of the inner wall of the through hole (5). At this time, the connecting nozzle (82) slides outside the central tube (81), and while sliding, it will drive the fixed block (84) to compress the second spring (87). Then, when the connecting nozzle (82) is completely moved out of the through hole (5), it can be switched normally. When the other injection molding transfer mechanism (8) rotates to the through hole (5), the second spring (87) will return the two fixed blocks (84) to the top, and the fixed blocks (84) will plug the two connecting nozzles (82) into the through hole (5), and normal injection molding can be performed.

2. The single-color injection mold for automobile plastic parts according to claim 1, characterized in that: The top of the regulating rod (10) is fixedly connected with a knob (11), and the knob (11) is made of stainless steel.

3. The single-color injection mold for automobile plastic parts according to claim 2, characterized in that: The quick-release mechanism (9) comprises a fixed shaft (93), a slide plate (94), a clamping block (95), a pressing block (96) and a third spring (97); the fixed shaft (93) is fixedly connected inside the connecting rod (15); the slide plate (94) is slidably connected to the outside of the fixed shaft (93); the slide plate (94) is slidably connected to the connecting rod (15); the clamping block (95) and the pressing block (96) are fixedly connected to the slide plate (94); the clamping block (95) and the pressing block (96) are both slidably connected to the connecting rod (15); the clamping block (95) is clamped to the docking block (14); and the third spring (97) is sleeved on the outside of the fixed shaft (93).

4. The single-color injection mold for automobile plastic parts according to claim 3, characterized in that: One end of the third spring (97) is fixedly connected to the slide plate (94), and the other end of the third spring (97) is fixedly connected to the inner surface of the connecting rod (15).

5. The single-color injection mold for automobile plastic parts according to claim 1, characterized in that: The adjustment conversion mechanism (7) includes a mounting plate (71), a ring seat (72), a fixing rod (73), a sleeve (74), a first spring (75), a connecting block (76), a limiting block (77) and a ball (78). The mounting plate (71) is mounted on the top of the conversion housing (4) by bolts. The mounting plate (71) is rotatably connected to the adjustment rod (10). The upper end of the mounting plate (71) is fixedly connected to the ring seat (72). The outer portion of the adjustment rod (10) is fixedly connected to two symmetrically distributed fixing rods (73). The outer portion of each fixed rod (73) is slidably sleeved with a sleeve (74), a first spring (75) is provided in the sleeve (74), one end of the first spring (75) is fixedly connected to the fixed rod (73), the other end of the first spring (75) is fixedly connected to the inner surface of the sleeve (74), a connecting block (76) is fixedly connected to the sleeve (74), a limiting block (77) is fixedly connected to the connecting block (76), and both the limiting block (77) and the connecting block (76) are slidably connected to the ring seat (72).

6. The single-color injection mold for automobile plastic parts according to claim 5, characterized in that: A ball (78) is provided on the limit block (77), and the ball (78) contacts the inner surface of the ring seat (72).

7. The method for using the single-color injection mold for automobile plastic parts according to any one of claims 1 to 6, characterized in that: The steps include: Step 1: The upper mold (1) and the lower mold (2) are combined to perform injection molding of the product. The molten material passes through the injection nozzle (6), the upper through hole (5), the injection transfer mechanism (8) on the right, the lower through hole (5), and then enters the injection runner (3). Then, the molten material enters the mold cavity between the upper mold (1) and the lower mold (2) through the injection runner (3) to perform injection molding of the product. Step 2: The upper mold (1) and the lower mold (2) are separated, and the molded product can be taken out; Step 3: When one of the injection molding transfer mechanisms (8) is blocked, just press the two connecting blocks (76) toward the adjusting rod (10). At this time, the connecting block (76) drives the sleeve (74) to slide outside the fixed rod (73), and compresses the first spring (75) while sliding. Then, the adjusting rod (10) passes through the mounting plate (71) and is inserted into the rotating shaft (13). The block (12) at the bottom of the adjusting rod (10) is simultaneously engaged with the rotating shaft (13). Then, the connecting block (76) is released, and the first spring (75) returns the connecting block (76) to the top and resets it. Then, the limit block (77) on the connecting block (76) enters the ring seat (72), thereby limiting the adjusting rod (10). Step 4: Then, the knob (11) is turned, and the knob (11) drives the adjusting rod (10) to rotate. The adjusting rod (10) drives the rotating shaft (13) to rotate through the block (12). The rotating shaft (13) drives the injection molding transfer mechanism (8) to be repositioned through the docking block (14) and the connecting rod (15), so that the injection molding can continue without stopping the machine. Step 5: In addition, when the injection molding transfer mechanism (8) is switched, the blocked injection molding transfer mechanism (8) will be subjected to the reaction force of the inner wall of the through hole (5). At this time, the connecting nozzle (82) slides outside the central tube (81), and while sliding, it will drive the fixed block (84) to compress the second spring (87). Then, when the connecting nozzle (82) is completely moved out of the through hole (5), it can be switched normally. When the other injection molding transfer mechanism (8) rotates to the through hole (5), the second spring (87) will return the two fixed blocks (84) to the top, and the fixed blocks (84) will plug the two connecting nozzles (82) into the through hole (5), and injection molding can be performed normally. Step 6: Later, you only need to remove the inspection cover (16) on the side of the conversion shell (4), and then press the pressing block (96) downward. The pressing block (96) will drive the slide plate (94) to slide in the connecting rod (15), and the block (95) on the slide plate (94) will separate from the docking block (14), thereby removing the connecting rod (15) and the blocked injection transfer mechanism (8). Then, you can clear the blockage. After clearing the blockage, reverse the operation to install the injection transfer mechanism (8) back. Step 7: Reinstall the inspection cover (16) back into the conversion housing (4).

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