Strong ejection injection mold for long-strip-shaped plastic part

Abstract

The utility model relates to a strip-shaped plastic part strong ejection injection mold, which comprises an upper mold body and a lower mold body, the upper mold body comprises an upper fixing plate and a fixed mold plate, the lower mold body comprises a lower fixing plate, two ejection plates, two mold feet and a movable mold plate, the movable mold plate is provided with a mold core, the fixed mold plate is provided with a mold cavity, and the mold core is provided with a mold core. A molding space used for molding a plastic part body is formed between the mold core and the mold cavity, the molding space comprises a first molding area used for molding a main plate, a second molding area used for molding a first baffle and a third molding area used for molding a second baffle, and a plurality of molding blocks used for molding mounting grooves are arranged on the movable mold plate; the bottom ends of the multiple forming blocks are all arranged on the top plate, the top ends of the multiple forming blocks are all located in the mold core, and when the multiple forming blocks eject the plastic part body out of the mold core, a separation space is formed between the multiple forming blocks and the first baffle. The reverse buckling structure between the second baffle and the forming block is removed by arranging the forced ejection and separation space, so that the plastic part body can be smoothly demolded.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a strong ejection injection mold for long strip plastic parts. Background Art

[0002] A long plastic piece such as Fig.11 and Fig.12 As shown, the plastic body 7 includes a main board 71, a first baffle 72 and a second baffle 73, wherein the second baffle 73 is provided with a plurality of mounting grooves 74, and the bottom walls of the plurality of mounting grooves 74 are provided with mounting holes 75. The bottom walls of the plurality of mounting grooves 74 are inclined at a certain angle to the body, so that after the body is formed, an undercut structure is formed between the second baffle 73 and the forming mechanism for forming the plurality of mounting grooves 74, thereby making it impossible for the plastic body 7 to be demoulded smoothly. Utility Model Content

[0003] The present application provides a strong ejection injection mold for a long strip of plastic parts, which solves the problem of undercut between the installation groove and the molding block through a strong ejection structure.

[0004] The present application provides a long strip plastic part strong ejection injection mold adopts the following technical solution:

[0005] A long strip plastic part strong ejection injection mold, comprising an upper mold body and a lower mold body, the upper mold body comprising an upper fixed plate and a fixed mold plate, the lower mold body comprising a lower fixed plate, two top plates, two mold feet, and a movable mold plate, the movable mold plate is provided with a core and a plastic flow channel, the fixed mold plate is provided with a cavity, a molding space for molding a plastic part body is formed between the core and the cavity, the molding space comprises a first molding area for molding a main board, a second molding area for molding a first baffle, and a third molding area for molding a second baffle, the movable mold plate is provided with a plurality of molding blocks for molding mounting grooves, the bottom ends of the plurality of molding blocks are all arranged on the top plate, the top ends of the plurality of molding blocks are all located in the core, the movable mold plate is slidably connected with a plurality of core pulling blocks for molding mounting holes, the movable mold plate is also provided with a plurality of driving parts for driving the core pulling blocks to move, when the plurality of molding blocks eject the plastic part body from the core, a disengagement space for the plastic part body to disengage from the plurality of molding blocks is formed between the plurality of molding blocks and the first baffle.

[0006] By adopting the above technical solution, after the plastic part body is injection molded, the three groups of driving parts first control the movement of the core pulling blocks so that the core pulling blocks are no longer in contact with the mounting grooves, and then the injection molding machine controls the two top plates to move toward the movable template. When the two top plates move, the molding blocks will move together, and when the molding blocks move, the plastic part body will be pushed out of the movable template. Then the injection molding personnel hold the plastic part body and push the plastic part body to move, so that the molding blocks move toward the side of the separation space and finally conflict with the first baffle. At this time, the molding blocks will release the inverted structure with the second baffle, and the injection molding personnel can directly remove the plastic part body from the molding blocks.

[0007] Preferably, a plurality of slide grooves are provided on the movable template, the driving part comprises a mounting seat slidably connected in the slide groove and an insertion rod provided on the fixed template, the core pulling block is provided on the mounting seat, and a socket for inserting the insertion rod is provided on the mounting seat, and the distance from the socket to the core gradually increases from the top end of the socket to the bottom end of the socket.

[0008] By adopting the above technical solution, when the mold is opened, the force of the movement of the lower mold body will be converted into the force of the movement of the several mounting seats with the cooperation of the several insertion rods and the several insertion holes, so that the several mounting seats move away from the third molding area with the several core pulling blocks, thereby releasing the undercut structure of the several core pulling blocks and the several mounting holes.

[0009] Preferably, the fixed template is provided with a plurality of placement holes and a plurality of limiting holes, the plurality of placement holes are respectively connected to the plurality of limiting holes, the plurality of insertion rods are respectively arranged in the plurality of placement holes, the middle parts of the plurality of insertion rods are provided with fixing grooves, the plurality of limiting holes are each provided with mounting blocks, the mounting blocks are provided with a first bolt, the first bolt is threadedly connected in the limiting hole, the ends of the plurality of mounting blocks are respectively extended into the plurality of fixing grooves, and the plurality of mounting blocks press the plurality of insertion rods into the plurality of placement holes.

[0010] By adopting the above technical solution, when installing the plug rod, it is only necessary to put the end of the mounting block into the fixing groove, and then thread the mounting block into the limiting hole to complete the installation of the plug rod. The above structure reduces the difficulty of loading and unloading the plug rod.

[0011] Preferably, a receiving hole is opened on a side of several mounting seats facing the core, a first spring is arranged in several receiving holes, a positioning block is arranged in several slide grooves, and the positioning blocks are respectively located on the side of several mounting seats away from the core, one end of several first springs abuts against the bottom wall of several receiving holes, and the other end of several first springs abuts against the side wall of several slide grooves closest to the core, and several first springs are in a compressed state. When the mold is opened, several first springs press several mounting seats against several positioning blocks, and several insertion rods are respectively located on the movement paths of several insertion holes.

[0012] By adopting the above technical solution, the first spring and the positioning block will limit the position of the mounting seat when the mold is opened, so that the insertion rod can be smoothly inserted into the insertion hole when the mold is closed.

[0013] Preferably, a second bolt is provided at the bottom of a plurality of the positioning blocks, a first threaded hole is provided in a plurality of the slide grooves, and a plurality of the second bolts are respectively threadedly connected in a plurality of the first threaded holes.

[0014] By adopting the above technical solution, the positioning block and the bolt will be impacted each time the mold is opened. The positioning block and the bolt are easily deformed under long-term impact. Therefore, the positioning block and the bolt must be replaced with new ones after the mold has been injected for a period of time. The above structure is adopted to facilitate the disassembly and replacement of the positioning block.

[0015] Preferably, a latent gate is provided at the end of the plastic flow channel, and when the mold is closed, the latent gate is connected to the second molding area and the plastic flow channel respectively.

[0016] By adopting the above technical solution, the design of the latent gate will automatically separate the plastic part body from the gate waste when the molding block ejects the plastic part body, making it convenient to take out the plastic part body later and eliminating the need to manually trim the gate waste after the plastic part body is taken out.

[0017] Preferably, a first inclined surface is provided on a surface of several core pulling blocks away from the core block along the inclination direction of the adjacent insertion hole, a plurality of limiting grooves for accommodating the core pulling blocks are provided on the fixed template, and a second inclined surface for fitting with the first inclined surface is provided on the side walls of several limiting grooves away from the cavity. When the mold is closed, several core pulling blocks are respectively located in the limiting grooves, and the first inclined surface fits with the second inclined surface.

[0018] By adopting the above technical solution, when the mold is closed, the fixed template can limit the core pulling blocks by cooperating with the first inclined surface and the second inclined surface to prevent the core pulling blocks from shifting during the hot melt plastic injection molding, thereby ensuring that the core pulling blocks are in the correct position during the hot melt plastic injection molding, thereby ensuring the molding of the mounting holes.

[0019] Preferably, a plurality of guide columns are provided between the lower fixed plate and the movable template, the two top plates are slidably connected to the plurality of guide columns, and a plurality of second springs are also sleeved on the plurality of guide columns, one end of a plurality of second springs are in contact with the top plate closest to the movable template, and the other ends of a plurality of second springs are in contact with the movable template, and a plurality of second springs are always in a compressed state.

[0020] By adopting the above technical solution, the guide column can guide the movement of the two top plates, and the second springs can provide driving force for the top plates to return to their original position after movement.

[0021] The technical effects of this utility model are mainly reflected in the following aspects:

[0022] 1. The utility model releases the undercut structure between the second baffle and the forming block by providing a strong ejection and separation space, so that the plastic part body can be demoulded smoothly;

[0023] 2. The utility model converts the force of the lower mold body movement into the force of the mounting seats movement through a plurality of plug rods and a plurality of plug holes, so that the core pulling blocks of the mold opening mode automatically move away from the plurality of mounting holes;

[0024] 3. The utility model is provided with a first spring and a positioning block, so that the insertion rod can be smoothly inserted into the insertion hole when the mold is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the mold in the mold closing state of this application.

[0026] Figure 2 yes Figure 1 Cross-sectional view of the middle mold along line AA.

[0027] Figure 3 yes Figure 2 A partial enlarged view of point B in the middle.

[0028] Figure 4 yes Figure 1 Schematic diagram of the structure of the mid-motion template.

[0029] Figure 5 yes Figure 4 Cross-sectional view of the middle moving template along line CC.

[0030] Figure 6 It is a structural schematic diagram of the molding block and the plastic part body when the molding block pushes the plastic part body out of the core.

[0031] Figure 7 yes Figure 1 Schematic diagram of the structure of the middle and lower mold.

[0032] Figure 8 yes Figure 1 Schematic diagram of the structure of the middle and upper mold body.

[0033] Fig. 9 yes Figure 8 Schematic diagram of the structure of the middle plug rod, the mounting block and the first bolt.

[0034] Fig.10 yes Figure 7 Schematic diagram of the structure of the middle mounting seat and the core pulling block.

[0035] Fig.11 It is a structural diagram of the plastic part body.

[0036] Fig.12 yes Fig.11 Cross-sectional view of the plastic body along line DD.

[0037] Figure numerals: 1, upper mold body; 11, upper fixed plate; 12, fixed mold plate; 121, cavity; 122, placement hole; 123, limit hole; 124, mounting block; 125, first bolt; 126, limit groove; 127, second inclined surface; 2, lower mold body; 21, lower fixed plate; 22, top plate; 23, mold foot; 24, movable mold plate; 241, core; 242, plastic runner; 243, latent gate; 244, molding block; 245, core pulling block; 246, slide groove; 247, first thread Hole; 3. Molding space; 31. First molding area; 32. Second molding area; 33. Third molding area; 4. Driving unit; 41. Mounting seat; 411. Plug hole; 412. Accommodating hole; 413. First spring; 42. Insert rod; 421. Fixing groove; 5. Positioning block; 51. Second bolt; 6. Guide column; 61. Second spring; 7. Plastic body; 71. Main board; 72. First baffle; 73. Second baffle; 74. Mounting groove; 75. Mounting hole; 8. First inclined surface; 9. Disengagement space. DETAILED DESCRIPTION

[0038] The present application is further described in detail below in conjunction with the accompanying drawings to make the technical solution of the present application easier to understand and grasp.

[0039] Reference Figure 1 and Figure 2 The present embodiment is a long strip plastic part strong ejection injection mold, comprising an upper mold body 1 and a lower mold body 2, wherein the upper mold body 1 comprises an upper fixed plate 11 and a fixed mold plate 12 which are fixedly connected to each other, and the lower mold body 2 comprises a lower fixed plate 21, two top plates 22, two mold feet 23, and a movable mold plate 24, wherein the two mold feet 23 are fixedly connected to both sides of the lower fixed plate 21, and the movable mold plate 24 is fixedly connected to the two mold feet 23. A plurality of guide posts 6 are fixed between the lower fixed plate 21 and the movable mold plate 24, the two top plates 22 are fixedly connected to each other and are both slidably connected to the plurality of guide posts 6 along the mold opening direction of the mold, and a plurality of guide posts 6 are also sleeved with second springs 61, one end of the plurality of second springs 61 is in conflict with the top plate 22 closest to the movable mold plate 24, and the other end of the plurality of second springs 61 is in conflict with the movable mold plate 24, and the plurality of second springs 61 are always in a compressed state. A plurality of ejector pins are fixedly connected to the ejector block closest to the movable platen 24 , and the top ends of the ejector pins are all located on the core 241 .

[0040] Reference Figure 1-Figure 5 , Figure 7 and Figure 8The movable plate 24 is provided with a core 241, and the fixed plate 12 is provided with a cavity 121. When the mold is closed, two molding spaces 3 for molding the plastic body 7 are formed between the core 241 and the cavity 121. The molding space 3 includes a first molding area 31 for molding the main board 71, a second molding area 32 for molding the first baffle 72, and a third molding area 33 for molding the second baffle 73. The movable plate 24 is also provided with a plastic flow channel 242, and two latent gates 243 are provided at the end of the plastic flow channel 242. The two latent gates 243 are connected to the two second molding areas 32 and the plastic flow channel 242 respectively.

[0041] Reference Figure 1-Figure 3 , Figure 6-Figure 7 Six molding blocks 244 for molding the mounting grooves 74 are slidably connected to the movable mold plate 24 along the mold opening direction of the mold. The bottom ends of the six molding blocks 244 are fixed on the top plate 22 closest to the movable mold plate 24, and the top ends of the six molding blocks 244 are located in the third molding area 33. When the six molding blocks 244 push the two plastic parts bodies 7 out of the core 241, a separation space 9 is formed between the three molding blocks 244 on the same side and the first baffle plate 72 on the same side for the plastic parts bodies 7 to separate from the three molding blocks 244 on the same side.

[0042] Reference Figure 1 , Figure 2 , Figure 4 , Figure 7 and Figure 8 Six core-pulling blocks 245 for forming mounting holes 75 are slidably connected to the movable plate 24 in a direction perpendicular to the mold opening direction of the mold, and six sets of driving parts 4 for driving the core-pulling blocks 245 are also provided on the movable plate 24. Six slide grooves 246 are also provided on the movable plate 24, and the driving part 4 includes a mounting seat 41 slidably connected in the slide groove 246 in a direction perpendicular to the mold opening direction of the mold and an insertion rod 42 fixed to the fixed plate 12. The six core-pulling blocks 245 are respectively fixed to the six mounting seats 41, and the six mounting seats 41 are all provided with a plug hole 411 for inserting the plug rod 42, and the distance from the plug hole 411 to the core 241 gradually increases from the top end of the plug hole 411 to the bottom end of the plug hole 411.

[0043] Reference Figure 1 , Figure 8 and Fig. 9The fixed template 12 is provided with six placement holes 122 and six limiting holes 123. The six placement holes 122 are respectively connected to the six mounting holes 75. The six insertion rods 42 are respectively arranged in the six placement holes 122. The middle parts of the six insertion rods 42 are provided with fixing grooves 421. The six limiting holes 123 are each provided with a mounting block 124. The six mounting blocks 124 are each fixed with a first bolt 125. The first bolt 125 is threadedly connected in the limiting hole 123. The ends of the six mounting blocks 124 are respectively extended into the six fixing grooves 421. The six mounting blocks 124 press the plurality of insertion rods 42 into the plurality of placement holes 122.

[0044] Reference Figure 1 , Figure 2 , Figure 7 and Fig.10 , the six mounting seats 41 are all provided with accommodating holes 412 on one side facing the core 241 along the direction perpendicular to the mold opening direction, and the six accommodating holes 412 are each provided with a first spring 413, one end of the six first springs 413 abuts against the bottom walls of the plurality of accommodating holes 412, and the other ends of the six first springs 413 abut against the side walls of the six slide grooves 246 closest to the core 241, and the six first springs 413 are all in a compressed state.

[0045] Reference Figure 1 , Figure 2 , Figure 4 and Figure 7 , six chute 246 are provided with positioning blocks 5, the six positioning blocks 5 are respectively located on the side of the six mounting seats 41 away from the core 241, the bottom of the six positioning blocks 5 are fixedly connected with second bolts 51, the six chute 246 are provided with first threaded holes 247, and the six second bolts 51 are respectively threadedly connected in the six first threaded holes 247. When the mold is opened, the six first springs 413 press the six mounting seats 41 against the six positioning blocks 5, and the six insertion rods are respectively located on the movement paths of the six insertion holes 411.

[0046] Reference Figure 1 , Figure 2 and Figure 8 The six core-pulling blocks 245 are provided with first inclined surfaces 8 along the inclined direction of the adjacent insertion holes 411 on the side away from the core 241. The fixed mold plate 12 is provided with six limiting grooves 126 for accommodating the core-pulling blocks 245. The six limiting grooves 126 are respectively located on the side of the six mounting holes 75 close to the cavity 121. The side walls of the six limiting grooves 126 away from the cavity 121 are provided with second inclined surfaces 127 for fitting with the first inclined surfaces 8. When the mold is closed, the six core-pulling blocks 245 are respectively located in the limiting grooves 126, the six first inclined surfaces 8 fit the six second inclined surfaces 127, and the six second inclined surfaces 127 are respectively located on the side of the six first inclined surfaces 8 away from the third molding area 33.

[0047] Reference Figure 1-Figure 10 The specific injection molding process of the mold in this application is as follows:

[0048] First, the mold is in an open mold state. At this time, the six first springs 413 press the six mounting seats 41 against the six positioning blocks 5 , and the six insertion rods 42 are respectively located on the movement paths of the six insertion holes 411 .

[0049] Then, the product can be injected by controlling the mold to close. First, the injection molding machine controls the lower mold body 2 to move toward the upper mold body 1. During this process, the six insertion rods 42 will be inserted into the six insertion holes 411 respectively, and drive the six mounting seats 41 and the six core pulling blocks 245 to move toward the core 241. Finally, when the mold is closed, the six core pulling blocks 245 are respectively located in the limit grooves 126, and the six first inclined surfaces 8 are attached to the six second inclined surfaces 127. The six second inclined surfaces 127 are respectively located on the side of the six first inclined surfaces 8 away from the third molding area 33. The six core pulling blocks 245 are respectively in conflict with the top ends of the six molding blocks 244, so that the six mounting holes 75 can be formed.

[0050] After the mold is completely closed, the injection molding machine starts to inject hot melt plastic into the plastic channel, and the hot flow plastic enters the two molding spaces 3 through the two latent gates 243 and fills the two molding spaces 3. After the hot melt plastic completely fills the two molding spaces 3, the injection molding machine starts to maintain pressure on the two plastic parts 7 that have been formed. After the pressure maintenance of the two plastic parts 7 is completed, the mold can be opened.

[0051] When the mold is opened, the injection molding machine controls the lower mold body 2 to move away from the upper mold body 1. When the lower mold body 2 moves away from the upper mold body 1, under the action of the six insertion rods 42 and the six first springs 413, the six mounting seats 41 and the six core pulling blocks 245 will move away from the core 241. Finally, the six mounting seats 41 are pressed against the six limit blocks by the six first springs 413.

[0052] Then the injection molding machine controls the two ejector blocks to move toward the movable template 24. During the movement of the two ejector blocks, the six molding blocks 244 and a number of insertion rods will eject the two plastic parts bodies 7 out of the core 241. Then the injection molding personnel hold the two plastic parts bodies 7 and push the two plastic parts bodies 7 to move so that the three molding blocks 244 on the same side move toward the separation space 9 respectively, and finally make the six molding blocks 244 conflict with the two first baffles 72. At this time, the six molding blocks 244 will release the inverted structure with the two second baffles 73, and the injection molding personnel can directly remove the two plastic parts bodies 7 from the six molding blocks 244. Then, under the joint action of the injection molding machine and a number of second springs 61, the two ejector plates 22 will move and reset and bring the six molding blocks 244 and a number of ejector pins to reset. After the two ejector plates 22 are reset, the injection molding machine can control the mold to close the mold and perform the injection molding of the next group of plastic parts bodies 7.

[0053] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A long strip plastic part strong ejection injection mold, comprising an upper mold body (1) and a lower mold body (2), wherein the upper mold body (1) comprises an upper fixed plate (11) and a fixed mold plate (12), and the lower mold body (2) comprises a lower fixed plate (21), two top plates (22), two mold feet (23), and a movable mold plate (24), wherein the movable mold plate (24) is provided with a core (241) and a plastic flow channel (242), and the fixed mold plate (12) is provided with a cavity (121), and a molding space (3) for molding a plastic part body (7) is formed between the core (241) and the cavity (121), and the molding space (3) comprises a first molding area (31) for molding a main board (71), a second molding area (32) for molding a first baffle (72), and a third molding area (33) for molding a second baffle (73), characterized in that: The movable template (24) is provided with a plurality of molding blocks (244) for molding the mounting grooves (74); the bottom ends of the plurality of molding blocks (244) are all arranged on the top plate (22); the top ends of the plurality of molding blocks (244) are all located in the core (241); the movable template (24) is slidably connected with a plurality of core pulling blocks (245) for molding the mounting holes (75); the movable template (24) is also provided with a plurality of driving parts (4) for driving the core pulling blocks (245) to move; when the plurality of molding blocks (244) push the plastic part body (7) out of the core (241), a separation space (9) is formed between the plurality of molding blocks (244) and the first baffle (72) for the plastic part body (7) to separate from the plurality of molding blocks (244).

2. The long strip plastic part strong ejection injection mold according to claim 1, characterized in that: The movable mold plate (24) is also provided with a plurality of slide grooves (246), the driving part (4) comprises a mounting seat (41) slidably connected in the slide grooves (246) and an insertion rod (42) provided on the fixed mold plate (12), the core pulling block (245) is provided on the mounting seat (41), the mounting seat (41) is provided with an insertion hole (411) for inserting the insertion rod (42), and the distance between the insertion hole (411) and the core (241) gradually increases from the top end of the insertion hole (411) to the bottom end of the insertion hole (411).

3. The long strip plastic part strong ejection injection mold according to claim 2, characterized in that: The fixed template (12) is provided with a plurality of placement holes (122) and a plurality of limiting holes (123), the plurality of placement holes (122) are respectively connected to the plurality of limiting holes (123), the plurality of insertion rods (42) are respectively arranged in the plurality of placement holes (122), the middle parts of the plurality of insertion rods (42) are provided with fixing grooves (421), the plurality of limiting holes (123) are each provided with a mounting block (124), the mounting block (124) is provided with a first bolt (125), the first bolt (125) is threadedly connected in the limiting hole (123), the ends of the plurality of installation blocks (124) are respectively extended into the plurality of fixing grooves (421), and the plurality of installation blocks (124) press the plurality of insertion rods (42) into the plurality of placement holes (122).

4. The long strip plastic part strong ejection injection mold according to claim 2, characterized in that: A plurality of mounting seats (41) are provided with a receiving hole (412) on one side facing the core (241), a plurality of first springs (413) are provided in the receiving holes (412), a plurality of positioning blocks (5) are provided in the slide grooves (246), and a plurality of positioning blocks (5) are respectively located on a side of the mounting seats (41) away from the core (241). One end of a plurality of first springs (413) abuts against the bottom wall of the plurality of receiving holes (412), and the other end of a plurality of first springs (413) abuts against the side wall of the plurality of slide grooves (246) closest to the core (241). The plurality of first springs (413) are in a compressed state. When the mold is opened, the plurality of first springs (413) press the plurality of mounting seats (41) against the plurality of positioning blocks (5), and the plurality of insertion rods are respectively located on the movement paths of the plurality of insertion holes (411).

5. The long strip plastic part strong ejection injection mold according to claim 4, characterized in that: A second bolt (51) is provided at the bottom of the plurality of positioning blocks (5), a first threaded hole (247) is provided in each of the plurality of slide grooves (246), and the plurality of second bolts (51) are respectively threadedly connected in the plurality of first threaded holes (247).

6. The long strip plastic part strong ejection injection mold according to claim 1, characterized in that: A latent gate (243) is provided at the end of the plastic flow channel (242). When the mold is closed, the latent gate (243) is connected to the second molding area (32) and the plastic flow channel (242).

7. The long strip plastic part strong ejection injection mold according to claim 1, characterized in that: A first inclined surface (8) is provided on a surface of the plurality of core pulling blocks (245) away from the core (241) block along the inclined direction of the adjacent insertion hole (411); a plurality of limiting grooves (126) for accommodating the core pulling blocks (245) are provided on the fixed mold plate (12); a second inclined surface (127) for fitting with the first inclined surface (8) is provided on the side walls of the plurality of limiting grooves (126) away from the mold cavity (121); when the mold is closed, the plurality of core pulling blocks (245) are respectively located in the limiting grooves (126), and the first inclined surface (8) fits with the second inclined surface (127).

8. The long strip plastic part strong ejection injection mold according to claim 1, characterized in that: A plurality of guide columns (6) are provided between the lower fixed plate (21) and the movable plate (24); the two top plates (22) are slidably connected to the plurality of guide columns (6); second springs (61) are also sleeved on the plurality of guide columns (6); one end of the plurality of second springs (61) is in contact with the top plate (22) closest to the movable plate (24); the other end of the plurality of second springs (61) is in contact with the movable plate (24); and the plurality of second springs (61) are always in a compressed state.

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