A top block ejection marking injection mold

Abstract

The application relates to a top block imprinting-free injection mold, which comprises a movable mold, a fixed mold, an ejection assembly and a cooling piece for cooling a top block, the ejection assembly comprises a driving piece one, a top plate, a top block, a top rod, a sliding block and a first fixing seat, the first fixing seat is fixed on the top plate, the sliding block slides on the first fixing seat, the top block comprises a block body and a forming body, one end of the top rod is fixed on the sliding block, and the other end of the top rod is fixed on the block body; a protrusion is formed on the forming body, the outer side surface of the protrusion is a first inclined surface parallel to the top rod, a forming groove is arranged on the movable mold, a groove matched with the protrusion is arranged on the inner wall of the forming groove, and the included angle of the groove is arranged as an acute angle. The pushing force of injection pressure on the top block is converted into the force for pushing the protrusion to abut against the groove wall, the problem that the top block is turned up is solved, the cooling piece makes the cooling temperature difference of each part of an injection product tend to be consistent, the generation of surface temperature difference marks is reduced, and through the hard cooperation of the protrusion and the groove and the flexible cooperation of the cooling piece, the top block imprint is finally eliminated.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of molds, in particular to a top block print eliminating injection mold. BACKGROUND

[0002] An injection mold is a tool for producing plastic products and also a tool for giving plastic products complete structure and accurate size. Injection molding is a processing method commonly used in batch production of some complex-shaped parts, which includes the steps of clamping, injecting, pressure maintaining, cooling, opening, and ejection. Specifically, it refers to injecting molten material into a mold cavity under high pressure, and obtaining a shaped product after cooling and solidification. In the design of an injection mold, the design of the ejection system has a great influence on the quality of the final injection molded product.

[0003] For example, as shown in the injection molded product 1, Figure 1 When the injection molded product 1 is injected, the injection molded product 1 has a reverse block 11, and a slanted ejection method needs to be used for ejection. Referring to Figure 2 and Figure 3 Because the mold will shake during injection, the molten material will enter the gap between the top block 41 and the movable mold 21, and the top block 41 will be pushed towards the side of the fixed mold 22 by the injection pressure. The top block 41 will be flipped upwards. Because the top block 41 is pulled by the top rod 42, under the action of the huge injection pressure, the top rod 42 is difficult to pull the top block 41, resulting in a top block 41 print left on the injection molded product 1. The top block 41 print is usually covered by polishing and painting, which increases the consumption of manpower and other materials. SUMMARY

[0004] In order to eliminate the top block print, the present application provides a top block print eliminating injection mold.

[0005] The top block print eliminating injection mold provided by the present application adopts the following technical scheme:

[0006] A top block print eliminating injection mold, comprising a movable mold, a fixed mold, an ejection assembly, and a cooling piece, the ejection assembly comprising a driving piece one, a top plate, and a plurality of slanted ejection pieces, the driving piece one driving the top plate to move along the opening and closing direction, the slanted ejection piece comprising a top block, a top rod, a sliding block, and a first fixing seat, the first fixing seat being fixedly arranged on the top plate, the sliding block being slidably connected to the first fixing seat along the core-pulling direction;

[0007] The top block comprises a block body for connecting with the top rod and a forming body for forming the reverse block, one end of the top rod being fixedly arranged on the sliding block, the other end of the top rod being detachably connected to the block body, the top rod being arranged in an inclined manner, the top rod being slidably connected to the movable mold along the inclined direction;

[0008] The protrusion is provided outwardly away from one end of the shaped body, and a side of the protrusion away from the block body is a first inclined surface parallel to the inclined direction of the ejector rod.

[0009] The cooling member comprises a mounting head, an inlet pipe, an outlet pipe and a jet pipe. The mounting head is fixedly arranged at the bottom of the ejector rod. A butt joint groove and a water falling groove are coaxially and communicatively arranged on the mounting head. The butt joint groove is below the water falling groove. The inlet pipe is communicated with the butt joint groove. The outlet pipe is communicated with the water falling groove. An activity groove is coaxially arranged on the ejector rod along the axial direction. The activity groove is communicated with and coaxially arranged with the water falling groove. The diameter of the activity groove and the water falling groove is larger than that of the jet pipe. The bottom end of the jet pipe is fixedly arranged on the inner wall of the butt joint groove. The top end of the jet pipe extends to the top end of the activity groove.

[0010] By adopting the above technical scheme, the pushing direction of the injection pressure to the top block is towards the side of the fixed mold, and an included angle is formed between the pushing direction of the injection pressure to the top block and the moving direction of the top block. The pushing force of the injection pressure to the top block is converted into the force of pushing the protrusion against the wall of the groove. At this time, the protrusion and the groove form a reverse buckle, which limits the movement of the top block out of the forming groove and locks the top block, thereby solving the problem that the top block is flipped up. At the same time, since the cooling temperature difference also causes the top block to be printed, the cooling member is arranged to cool the top block, so that the cooling temperature difference of each part of the injection product tends to be consistent, and the surface temperature difference mark is reduced. Through the hard cooperation of the protrusion and the groove and the flexible cooperation of the cooling member, the top block mark is finally eliminated under the mutual action of the inside and outside of the two. During the ejection operation, the cooperation of the protrusion and the groove does not affect the ejection of the top block, and the through groove formed by the protrusion on the reverse buckle block of the injection product basically does not affect the use of the injection product.

[0011] Preferably, a reinforcing groove is coaxially and communicatively arranged in the middle of the protrusion. The reinforcing groove is used for forming a reinforcing rib. The reinforcing groove extends to the surface of the reverse buckle block.

[0012] By adopting the above technical scheme, since the protrusion is arranged to form a through groove on the reverse buckle block of the injection product, the structural strength of the reverse buckle block is affected to some extent. Therefore, the reinforcing groove is arranged to form a reinforcing rib on the reverse buckle block to enhance the structural strength of the reverse buckle block. At the same time, the arrangement of the reinforcing groove enables the molten material to pass through and fill the gap of the forming groove more quickly.

[0013] Preferably, the end of the reinforcing groove close to the fixed mold is tapered.

[0014] By adopting the technical scheme, the reinforcing groove separates the protrusion into two protruding blocks, the injection pressure of the molten material acts on the tapered inner wall of the reinforcing groove, and drives the two protruding blocks to move away from each other, so that the two protruding blocks can abut against the two side walls of the groove, further improving the fitting accuracy of the protrusion and the groove, and further improving the stability of the top block.

[0015] Preferably, the stabilizing piece further comprises a die frame, a fixed plate, a second fixing seat and a stabilizing rod, the fixed plate is located on the side of the top plate away from the movable die, the fixed plate is fixedly arranged on the movable die through the die frame, the second fixing seat is fixedly arranged on the fixed plate, the stabilizing rod is arranged and slidably connected on the sliding block along the oblique direction parallel to the ejector rod, the bottom end of the stabilizing rod is fixedly arranged on the second fixing seat, and the movable die is provided with a insertion slot matched with the top end of the stabilizing rod, and the top end of the stabilizing rod is inserted into the insertion slot.

[0016] By adopting the technical scheme, the top rod and the stabilizing rod are arranged, the double-rod structure can improve the moving stability of the sliding block, thereby improving the moving stability of the top block, especially in the process of ejecting the injection-molded product, the force on the surface of the injection-molded product is more uniform, the deformation of the injection-molded product is prevented, the ejection consistency is improved, and the auxiliary effect of eliminating the top block mark is achieved.

[0017] Preferably, the locking block further comprises an installation slot matched with the top end of the top rod, a first locking slot arranged on the side wall of the block body away from the forming body, the locking block is fixed in the first locking slot through a bolt, a second locking slot matched with the end of the locking block is arranged on the side wall of the top rod, and the end of the locking block is inserted into the second locking slot.

[0018] By adopting the technical scheme, the locking block is used to lock the top rod.

[0019] Preferably, the cooling piece further comprises a rotating head and a locking piece, a convex ring is coaxially arranged on the inner wall of the bottom end of the rotating head, a plurality of ring grooves matched with the convex ring are coaxially arranged on the outer wall of the jet pipe along the axis direction, the bottom end of the rotating head is sleeved on the top end of the jet pipe, the convex ring is embedded in the corresponding ring groove to rotate with each other, a rotating block is arranged on the top end of the rotating head, a rotating groove matched with the rotating block is arranged on the top wall of the installation slot, and the rotating block is rotatably connected in the rotating groove.

[0020] An extension flow channel is arranged on the block body, the extension flow channel extends to the side of the forming body, an interference-fitted plug is arranged at the end of the extension flow channel away from the forming body, the rotating head is arranged in a bent mode, and the locking piece is used to lock the rotating angle of the rotating head, so that the opening of the rotating head faces the side of the extension flow channel of the forming body.

[0021] By adopting the technical scheme, the cooling water enters the extension flow channel, better cools the formed block part, that is, cools the reverse block of the injection molded product, can further reduce the cooling temperature difference, and better eliminates the top block mark.

[0022] Preferably, the locking piece comprises a first magnet and a second magnet, the first magnet is embedded on the locking block, and the second magnet is fixedly arranged on the outer wall of the rotating head by glue.

[0023] By adopting the technical scheme, the setting of the rotating head can improve the applicability of the jet flow pipe and reduce the installation difficulty of the jet flow pipe. When the jet flow pipe is directly installed, it is difficult to directly align the bent opening of the rotating head with the extension flow channel because the inside is difficult to observe. Therefore, by setting the first magnet and the second magnet, the second magnet is first fixed by the position of the extension flow channel and the locking block, and then directly installed. The rotating head will automatically rotate to the second magnet opposite the first magnet under the vibration of the mold and the adsorption force of the first magnet and the second magnet. The rotation direction of the rotating head is controlled by the mutual adsorption of the first magnet and the second magnet.

[0024] The technical effects of the present application mainly reflect in the following aspects:

[0025] 1. The pushing direction of the injection molding pressure on the top block is towards the fixed mold side, and an included angle is formed between the pushing direction of the injection molding pressure on the top block and the moving direction of the top block. The pushing force of the injection molding pressure on the top block is converted into the force of pushing the protrusion against the groove wall. At this time, the protrusion and the groove form a reverse buckle, which limits the top block from moving out of the forming groove, locks the top block, solves the problem of top block upturning, and eliminates the top block mark.

[0026] 2. The protrusion forms a through groove on the reverse block of the injection molded product, which will affect the structural strength of the reverse block to some extent. Therefore, the reinforcing groove is opened to form a reinforcing rib on the reverse block to enhance the structural strength of the reverse block. Meanwhile, the opening of the reinforcing groove can make the molten material pass through and more quickly fill the gap of the forming groove. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic view of an injection molded product.

[0028] Figure 2 is a partial sectional view of an injection mold in the related art.

[0029] Figure 3 is Figure 2 is an enlarged view of A in

[0030] Figure 4This is a schematic diagram of the overall structure of the injection mold according to an embodiment of this application.

[0031] Figure 5 This is a schematic diagram of the structure of the ejector component and the injection molded product in an embodiment of this application.

[0032] Figure 6 This is a schematic diagram of the structure of the moving mold and several top blocks in an embodiment of this application.

[0033] Figure 7 It is along Figure 5 A cross-sectional view along the BB line.

[0034] Figure 8 yes Figure 7 Enlarged view of point C in the middle.

[0035] Figure 9 This is a schematic diagram of the structure of one of the top blocks in an embodiment of this application.

[0036] Figure 10 This is a schematic diagram of the top block forming undercut block in an embodiment of this application.

[0037] Figure 11 This is a schematic diagram of the structure of the injection-molded product according to an embodiment of this application.

[0038] Figure 12 This is a schematic diagram of the cooling water inlet and outlet structure.

[0039] Explanation of reference numerals in the attached drawings: 1. Injection molded product; 11. Undercut block; 12. Reinforcing rib; 13. Through groove; 21. Moving mold; 211. Molding groove; 212. Groove; 213. Slot; 22. Fixed mold; 31. Drive component one; 32. Ejector plate; 4. Angled ejector; 41. Ejector block; 411. Block; 412. Molded body; 413. Protrusion; 414. First inclined surface; 415. Reinforcing groove; 416. Mounting groove; 417. First locking groove; 418. Extended runner; 419. Plug; 410. Rotary groove ; 42. Top rod; 421. Second locking groove; 43. Slider; 44. First fixed seat; 45. Locking block; 5. Stabilizer; 51. Mold frame; 52. Fixed plate; 53. Second fixed seat; 54. Stabilizer rod; 6. Cooling component; 61. Mounting head; 611. Connecting groove; 612. Water drop trough; 62. Water inlet pipe; 63. Water outlet pipe; 64. Spray pipe; 641. Ring groove; 65. Rotating head; 651. Rotating block; 652. Convex ring; 7. Locking component; 71. First magnet; 72. Second magnet. Detailed Implementation

[0040] The following is in conjunction with the appendix Figures 4-12 This application will be described in further detail to make the technical solution of this application easier to understand and master.

[0041] The embodiment of the application discloses a top block printing injection mold.

[0042] With reference to Figures 4-6 The embodiment of the application discloses a top block printing injection mold, which comprises a movable mold 21, a fixed mold 22, an ejection assembly and a cooling piece 6. The ejection assembly comprises a driving piece 31, a top plate 32 and a plurality of inclined ejection pieces 4. The driving piece 31 drives the top plate 32 to move along the mold opening and closing direction. The inclined ejection piece 4 comprises a top block 41, a top rod 42, a sliding block 43 and a first fixing seat 44. The first fixing seat 44 is fixedly arranged on the top plate 32. The sliding block 43 is slidably connected to the first fixing seat 44 along the core-pulling direction.

[0043] With reference to Figures 5-8 The top block 41 comprises a block body 411 for being connected with the top rod 42 and a forming body 412 for forming a reverse buckle 11. One end of the top rod 42 is fixedly arranged on the sliding block 43. The other end of the top rod 42 is detachably connected to the block body 411. The top rod 42 is arranged in an inclined manner. The top rod 42 is slidably connected to the movable mold 21 along the inclined direction.

[0044] With reference to Figures 7-11 An end of the forming body 412, which is away from the block body 411, is formed with a protrusion 413. A side surface of the protrusion 413, which is away from the block body 411, is a first inclined surface 414. The first inclined surface 414 is parallel to the inclined direction of the top rod 42. A forming groove 211 is arranged on the movable mold 21. A recess 212 matched with the protrusion 413 is arranged on the inner wall of the forming groove 211. The included angle of the recess 212 is arranged in an acute angle.

[0045] With reference to Figure 7 、 Figure 8 and Figure 12 The cooling piece 6 is used for cooling the top block 41. The cooling piece 6 comprises a mounting head 61, a water inlet pipe 62, a water outlet pipe 63 and a jet pipe 64. The mounting head 61 is fixedly arranged at the bottom of the top rod 42. A butt joint groove 611 and a water falling groove 612, which are in communication with each other and coaxial, are arranged on the mounting head 61. The butt joint groove 611 is located below the water falling groove 612. The water inlet pipe 62 is in communication with the butt joint groove 611. The water outlet pipe 63 is in communication with the water falling groove 612. An activity groove is arranged on the top rod 42 along the axial direction. The activity groove is in communication with the water falling groove 612 and is arranged coaxially with the water falling groove 612. The diameters of the activity groove and the water falling groove 612 are greater than the diameter of the jet pipe 64. The bottom end of the jet pipe 64 is fixedly arranged on the inner wall of the butt joint groove 611. The top end of the jet pipe 64 extends to the top end of the activity groove.

[0046] With reference to Figures 7-12, the pushing direction of the injection pressure to the top block 41 is towards the side of the fixed mold 22, and an included angle is formed between the pushing direction of the injection pressure to the top block 41 and the moving direction of the top block 41, the pushing force of the injection pressure to the top block 41 is converted into the force of pushing the protrusion 413 against the wall of the groove 212, at this time, the cooperation of the protrusion 413 and the groove 212 forms an undercut, which limits the movement of the top block 41 out of the forming groove 211, and plays a locking role on the top block 41, solving the problem that the top block 41 is flipped up. At the same time, the cooling temperature difference will also cause the top block 41 to be printed, so the cooling member 6 is arranged to cool the top block 41, so that the cooling temperature difference of each part of the injection molded product 1 tends to be consistent, and the generation of surface temperature difference marks is reduced. Through the hard cooperation of the protrusion 413 and the groove 212 and the flexible cooperation of the cooling member 6, under the mutual action of the inside and outside of the two, the top block 41 mark is finally eliminated. During the ejection operation, the cooperation of the protrusion 413 and the groove 212 will not affect the ejection of the top block 41, and at the same time, the through groove 13 formed by the protrusion 413 will be left on the undercut block 11 of the injection molded product 1, which basically will not affect the use of the injection molded product 1.

[0047] Referring to Figures 9-11 , a reinforcing groove 415 is arranged in the middle of the protrusion 413, and the reinforcing groove 415 is used for forming a reinforcing rib 12, and the reinforcing groove 415 extends to the surface of the undercut block 11.

[0048] Referring to Figures 9-11 , since the arrangement of the protrusion 413 will form a through groove 13 on the undercut block 11 of the injection molded product 1, which will affect the structural strength of the undercut block 11 to some extent, the reinforcing groove 415 is arranged to form the reinforcing rib 12 on the undercut block 11 to enhance the structural strength of the undercut block 11, and the arrangement of the reinforcing groove 415 can make the molten material pass through and more quickly fill the gap of the forming groove 211.

[0049] Referring to Figures 9-11 , the reinforcing groove 415 is arranged in a tapered manner near one end of the fixed mold 22. The reinforcing groove 415 separates the protrusion 413 into two lugs, and the injection pressure of the molten material will act on the tapered inner wall of the reinforcing groove 415, which will drive the two lugs to move away from each other, so that the two lugs can be tightly attached to the two side walls of the groove 212, further improving the cooperation accuracy of the protrusion 413 and the groove 212, and further improving the stability of the top block 41.

[0050] Referring to Figure 5 and Figure 7Further comprising a stabilizing piece 5, the stabilizing piece 5 comprises a die frame 51, a fixed plate 52, a second fixed seat 53 and a stabilizing rod 54, the fixed plate 52 is located on the side of the top plate 32 away from the movable die 21, the fixed plate 52 is fixedly arranged on the movable die 21 through the die frame 51, the second fixed seat 53 is fixedly arranged on the fixed plate 52, the stabilizing rod 54 is arranged and slidably connected on the sliding block 43 along the oblique direction parallel to the top rod 42, the bottom end of the stabilizing rod 54 is fixedly arranged on the second fixed seat 53, and the movable die 21 is provided with a slot 213 matched with the top end of the stabilizing rod 54, and the top end of the stabilizing rod 54 is inserted into the slot 213.

[0051] With reference to Figure 5 and Figure 7 , by arranging the top rod 42 and the stabilizing rod 54, the movement stability of the sliding block 43 can be improved by the double rods, so that the movement stability of the top block 41 is improved, especially in the process of ejecting the injection molded product 1, the force on each part of the surface of the injection molded product 1 can be more uniform, the deformation of the injection molded product 1 can be prevented, and the ejection consistency is improved, which plays an auxiliary role in eliminating the marks of the top block 41.

[0052] With reference to Figure 8 Further comprising a locking block 45, the bottom end of the block body 411 is provided with a mounting groove 416 matched with the top end of the top rod 42, a first locking groove 417 is arranged on the side wall of the block body 411 away from the forming body 412, the locking block 45 is fixedly arranged in the first locking groove 417 through bolts, a second locking groove 421 matched with the end of the locking block 45 is arranged on the side wall of the top rod 42, and the end of the locking block 45 is inserted into the second locking groove 421. The top rod 42 is locked by the locking block 45.

[0053] With reference to Figure 7 , Figure 8 and Figure 12 , the cooling piece 6 further comprises a rotating head 65 and a locking piece 7, a convex ring 652 is coaxially arranged on the inner wall of the bottom end of the rotating head 65, a plurality of ring grooves 641 matched with the convex ring 652 are coaxially arranged on the outer wall of the jet pipe 64 along the axis direction, the bottom end of the rotating head 65 is sleeved on the top end of the jet pipe 64, the convex ring 652 is embedded in the corresponding ring groove 641 to realize mutual rotation, and the top end of the rotating head 65 is provided with a rotating block 651.

[0054] With reference to Figure 7 , Figure 8 and Figure 12The extension flow channel 418 is formed on the block 411 and extends towards the side of the shaped body 412. The end of the extension flow channel 418 away from the shaped body 412 is provided with an interference fit plug 419. The rotating head 65 is arranged in a bent manner. The locking member 7 is used to lock the rotating angle of the rotating head 65, so that the opening of the rotating head 65 is directed towards the side of the extension flow channel 418 of the shaped body 412.

[0055] With reference to Figure 7 , Figure 8 and Figure 12 , by providing the extension flow channel 418 and the rotating head 65, the cooling water can enter the extension flow channel 418, so that the shaped block part can be better cooled, that is, the inverted block 11 of the injection molded product 1 can be cooled, so that the cooling temperature difference can be further reduced, and the top block 41 mark can be better eliminated.

[0056] With reference to Figure 8 , the locking member 7 includes a first magnet 71 and a second magnet 72. The first magnet 71 is embedded in the locking block 45. The second magnet 72 is fixedly arranged on the outer wall of the rotating head 65 by glue. When the rotating head 65 is rotated to the side where the opening is directed towards the extension flow channel 418, the second magnet 72 is close to and attracts the first magnet 71.

[0057] With reference to Figure 8 and Figure 12 , the provision of the rotating head 65 can improve the applicability of the jet flow pipe 64 and reduce the installation difficulty of the jet flow pipe 64. When the jet flow pipe 64 is directly installed, it is difficult to directly align the bent opening of the rotating head 65 with the extension flow channel 418 due to the difficulty of observing the inside. Therefore, by providing the first magnet 71 and the second magnet 72, the second magnet 72 is first fixed by the position of the extension flow channel 418 and the locking block 45, and then directly installed. Under the vibration of the mold and the attraction force between the first magnet 71 and the second magnet 72, the rotating head 65 will automatically rotate to the position where the second magnet 72 directly faces the first magnet 71. The rotating direction of the rotating head 65 is controlled by the mutual attraction between the first magnet 71 and the second magnet 72.

[0058] Of course, the above is only a typical example of the present application. In addition to this, the present application can have other various specific embodiments. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

Claims

1. A type of injection mold for removing ejector pins, characterized in that: The assembly includes a moving mold (21), a fixed mold (22), an ejector assembly, and a cooling component (6). The ejector assembly includes a drive component (31), a top plate (32), and several inclined ejector components (4). The drive component (31) drives the top plate (32) to move along the mold opening and closing direction. The inclined ejector component (4) includes an ejector block (41), an ejector rod (42), a slider (43), and a first fixed seat (44). The first fixed seat (44) is fixedly mounted on the top plate (32), and the slider (43) is slidably connected to the first fixed seat (44) along the core pulling direction. The top block (41) includes a block (411) for connecting with the top rod (42) and a molding body (412) for molding the undercut block (11). One end of the top rod (42) is fixedly mounted on the slider (43), and the other end of the top rod (42) is detachably connected to the block (411). The top rod (42) is inclined and is slidably connected to the moving mold (21) along the inclined direction. The molded body (412) has a protrusion (413) formed outward at one end away from the block (411). The side of the protrusion (413) away from the block (411) is a first inclined surface (414). The first inclined surface (414) is parallel to the inclined direction of the push rod (42). A molding groove (211) is provided on the moving mold (21). A groove (212) that cooperates with the protrusion (413) is provided on the inner wall of the molding groove (211). The included angle of the groove (212) is set at an acute angle. The cooling component (6) includes a mounting head (61), an inlet pipe (62), an outlet pipe (63), and a spray pipe (64). The mounting head (61) is fixedly mounted at the bottom of the top rod (42). The mounting head (61) has a coaxial and interconnected docking groove (611) and a drainage trough (612). The docking groove (611) is located below the drainage trough (612). The inlet pipe (62) connects to the docking groove (611). The water outlet pipe (63) is connected to the water trough (612). The top rod (42) has a movable groove running through it along the axial direction. The movable groove is connected to the water trough (612) and is coaxial with the water trough (612). The diameter of the movable groove and the water trough (612) is larger than the diameter of the spray pipe (64). The bottom end of the spray pipe (64) is fixedly set on the inner wall of the docking groove (611), and the top end of the spray pipe (64) extends to the top of the movable groove.

2. The ejector block injection mold according to claim 1, characterized in that: A reinforcing groove (415) is provided through the middle of the protrusion (413). The reinforcing groove (415) is used to form a reinforcing rib (12). The reinforcing groove (415) extends towards the side of the formed body (412) to be flush with the surface of the undercut block (11).

3. The ejector block injection mold according to claim 2, characterized in that: The reinforcing groove (415) is tapered at one end near the fixed mold (22).

4. The ejector block injection mold according to claim 1, characterized in that: It also includes a stabilizing component (5), which includes a mold frame (51), a fixing plate (52), a second fixing seat (53), and a stabilizing rod (54). The fixing plate (52) is located on the side of the top plate (32) away from the moving mold (21). The fixing plate (52) is fixedly mounted on the moving mold (21) by the mold frame (51). The second fixing seat (53) is fixedly mounted on the fixing plate (52). The stabilizing rod (54) passes through and slides on the slider (43) in an inclined direction parallel to the top rod (42). The bottom end of the stabilizing rod (54) is fixedly mounted on the second fixing seat (53). The moving mold (21) has a slot (213) that matches the top end of the stabilizing rod (54). The top end of the stabilizing rod (54) is inserted into the slot (213).

5. The ejector block injection mold according to claim 1, characterized in that: It also includes a locking block (45), the bottom end of the block (411) is provided with an installation groove (416) that matches the top end of the push rod (42), the side wall of the block (411) away from the molded body (412) is provided with a first locking groove (417), the locking block (45) is fixed in the first locking groove (417) by bolts, the side wall of the push rod (42) is provided with a second locking groove (421) that matches the end of the locking block (45), and the end of the locking block (45) is inserted into the second locking groove (421).

6. The ejector block injection mold according to claim 5, characterized in that: The cooling component (6) also includes a rotating head (65) and a locking component (7). A convex ring (652) is coaxially provided on the inner wall of the bottom end of the rotating head (65). Multiple annular grooves (641) coaxially provided along the axial direction on the outer wall of the jet pipe (64) to cooperate with the convex ring (652). The bottom end of the rotating head (65) is sleeved on the top end of the jet pipe (64). The convex ring (652) is embedded in the corresponding annular groove (641) to achieve mutual rotation. A rotating block (651) is provided at the top end of the rotating head (65). A rotating groove (410) is provided on the top wall of the mounting groove (416) to cooperate with the rotating block (651). The rotating block (651) is rotatably connected in the rotating groove (410). The block (411) has an extension channel (418) extending toward the molded body (412). An interference fit plug (419) is installed at the end of the extension channel (418) away from the molded body (412). The rotating head (65) is bent. The locking member (7) is used to lock the rotation angle of the rotating head (65) so that the opening of the rotating head (65) faces the extension channel (418) of the molded body (412).

7. The ejector block injection mold according to claim 6, characterized in that: The locking component (7) includes a first magnet (71) and a second magnet (72). The first magnet (71) is embedded in the locking block (45), and the second magnet (72) is fixed on the outer wall of the rotating head (65) by glue. When the rotating head (65) rotates to the point where the second magnet (72) approaches and attracts the first magnet (71), the rotating head (65) rotates to the side where the opening faces the extension channel (418).

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