Die

Abstract

The mold comprises a fixed mold, a movable mold and a core pulling mechanism, the fixed mold comprises a fixed mold set plate, a fixed mold core and at least one inclined guide column, and the fixed mold core and the inclined guide column are both installed on the fixed mold set plate; the movable mold comprises a movable mold set plate, a movable mold core, a slide seat and a jacking assembly, the movable mold core and the slide seat are both installed on the movable mold set plate, the slide seat can slide relative to the movable mold set plate, the jacking assembly is installed on the slide seat in a sliding mode, and at least one inclined hole is formed in the slide seat; the core pulling mechanism comprises a first connecting assembly, a second connecting assembly, a limiting pin and a limiting seat, the limiting seat is installed on the outer wall of the movable die set plate, one end of the first connecting assembly is fixed to the slide seat, the other end of the first connecting assembly is slidably connected with the limiting seat, one end of the second connecting assembly is fixedly connected with the jacking assembly, and the other end of the second connecting assembly is slidably connected with the limiting seat; one end of the limiting pin is installed on the second connecting assembly in a sliding mode, the other end of the limiting pin abuts against the first connecting assembly, and the first connecting assembly is provided with a clamping groove matched with the limiting pin.

Description

Technical Field

[0001] The invention relates to the technical field of mold structures, and in particular to a mold. Background Art

[0002] A mold is a tool used to make molded objects. This tool is made up of various parts. Different molds are made up of different parts. The mold can, with the cooperation of an injection molding machine, make thermoplastics or thermosetting plastics into plastic products of various shapes.

[0003] A slider seat is slidably installed on the movable mold plate of the existing mold. The slider seat is a part of the product cavity. The slider seat is driven by the inclined guide column in the fixed mold. In order to quickly separate the slider seat from the product, a lifting assembly is slidably installed on the slider seat. The ejector in the lifting assembly is used to eject the molded plastic product from the slider seat to achieve core pulling separation.

[0004] However, during the mold opening process, the lifting assembly is generally driven by several cylinders. The cylinder drive is costly and needs to be started at a fixed time, which makes the drive structure of the entire mold complicated and not suitable for large-scale promotion. Summary of the invention

[0005] The purpose of the present invention is to provide a mold to solve the technical problem that in the process of opening the mold, the lifting assembly of the existing mold is generally driven by several cylinders, the cylinder drive cost is high, and it needs to be started at a fixed time, which makes the drive structure of the entire mold complicated and not suitable for large-scale promotion.

[0006] The present invention is achieved in that:

[0007] The present invention provides a mold, comprising:

[0008] The fixed die comprises a fixed die assembly plate, a fixed die core and at least one inclined guide column, wherein the fixed die core and the inclined guide column are both mounted on the fixed die assembly plate;

[0009] The movable mold comprises a movable mold assembly plate, a movable mold core, a sliding seat and a lifting assembly, wherein the movable mold core and the sliding seat are both mounted on the movable mold assembly plate, and the sliding seat can slide relative to the movable mold assembly plate, the lifting assembly is slidably mounted on the sliding seat, and the sliding seat is provided with at least one inclined hole;

[0010] The core pulling mechanism comprises a first engaging component, a second engaging component, a limit pin and a limit seat, wherein the limit seat is installed on the outer wall of the movable mold assembly plate, one end of the first engaging component is fixed on the sliding seat, and the other end is slidably connected to the limit seat, one end of the second engaging component is fixedly connected to the lifting component, and the other end is slidably connected to the limit seat, one end of the limit pin is slidably installed on the second engaging component, and the other end is abutted against the first engaging component, and the first engaging component is provided with a card slot;

[0011] When the mold is closed, the inclined guide column is inserted into the inclined hole, and the sliding seat, the fixed mold core, the movable mold core and the lifting assembly are combined to form a cavity for molding a product; when the mold is opened, the inclined guide column disengages from the inclined hole and drives the sliding seat and the first connecting assembly to move toward the side of the limit seat, and the lifting assembly protrudes outside the sliding seat to eject the product from the sliding seat. After the limit pin is engaged with the slot, the inclined guide column drives the sliding seat, the first connecting assembly, the second connecting assembly, the lifting assembly and the limit pin to continue moving toward the side of the limit seat to separate the product from the lifting assembly.

[0012] Furthermore, the lifting assembly includes a top plate and a plurality of ejector pins, the sliding seat is also provided with a accommodating bin, a first through-hole and a plurality of pinholes all connected to the cavity, the first through-hole and the pinholes are both connected to the accommodating bin, the top plate is slidably installed in the accommodating bin, one end of each of the ejector pins is connected to the top plate, and the other end is respectively located in each of the pinholes, one end of the second connection assembly is slidably connected to the limit seat, and the other end is connected to the top plate after passing through the first through-hole.

[0013] Furthermore, the slide seat includes a slide body and a cover body, the slide body is slidably mounted on the movable mold plate, the slide body is provided with a concave cavity and a plurality of pinholes connected to the concave cavity, the first perforation is provided on the cover body, the cover body is installed on the slide body and encloses the inner wall of the concave cavity to form the accommodating bin, and the inclined hole is provided on the slide body.

[0014] Furthermore, the limit seat is provided with a first channel, a second channel and a limit slide, the first channel is arranged in parallel with the second channel, one end of the limit slide is connected with the first channel, and the other end is connected with the second channel, the first connecting component is slidably installed in the first channel, and the second connecting component is slidably installed in the second channel, the second connecting component is provided with a second through hole connected with the limit slide, and one end of the limit pin is slidably installed in the second through hole, and the other end passes through the limit slide and abuts against the outer wall of the first connecting component. When the limit pin is engaged with the slot, the limit pin can slide in the limit slide along the moving direction of the first connecting component.

[0015] Furthermore, the limiting seat includes a positioning plate, a support and a stopper, the positioning plate is installed on the outer wall of the movable mold plate, the support is fixed on the positioning plate, the stopper is installed on the side of the support away from the positioning plate, the first channel, the second channel and the limiting slide are all arranged on the support, the second channel is located on the side of the first channel away from the positioning plate, and the stopper and the positioning plate respectively block the two ends of the limiting slide.

[0016] Furthermore, the first connecting assembly includes a first support rod and a first connecting block, the first connecting block is fixedly connected to the sliding seat, one end of the first support rod is slidably installed in the first channel, and the other end is connected to the first connecting block, and the card slot is provided on the first support rod.

[0017] Furthermore, the second connecting assembly includes a second support rod and a second connecting block, the second connecting block is connected to the lifting assembly, one end of the second support rod is slidably installed in the second channel, and the other end is connected to the second connecting block, and the second through hole is provided on the second support rod.

[0018] Furthermore, the second connection assembly also includes a fastener, a countersunk hole connected to the second channel is provided on the side of the limit seat away from the sliding seat, the second support rod is provided with a threaded hole, one end of the fastener is located in the countersunk hole, and the other end is threadedly connected to the threaded hole.

[0019] Furthermore, the fixed mold also includes at least one pressure seat installed on the fixed mold assembly plate, the pressure seat is provided with a first inclined surface, and the sliding seat is provided with a second inclined surface. When the mold is closed, the pressure seat is located between the sliding seat and the limit seat, and the first inclined surface abuts against the second inclined surface.

[0020] Further, the fixed die assembly plate comprises a panel, a flow channel plate and an A plate which are connected in sequence, and the fixed die core and the inclined guide column are both mounted on the A plate; and / or,

[0021] The movable mold assembly plate includes a bottom plate, a B plate and two square irons, one end of the square iron is connected to the bottom plate, and the other end of the square iron is connected to the B plate, and the movable mold core and the core pulling mechanism are both installed on the B plate.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The core pulling mechanism is used in the present invention to replace the previous traditional oil cylinder. The core pulling mechanism can drive the sliding seat and the lifting assembly to perform corresponding reciprocating operation with the cooperation of the sliding seat and the inclined guide column, thereby saving the cost of the oil cylinder, having a simple structure, optimizing the mold structure, stabilizing the injection molding production, and being suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of a portion of the structure of a mold provided by an embodiment of the present invention;

[0025] Figure 2 for Figure 1 Exploded diagram of

[0026] Figure 3 A schematic diagram of a portion of the structure of a fixed mold provided by an embodiment of the present invention;

[0027] Figure 4 A schematic diagram of a portion of the structure of a combined movable mold and a core-pulling mechanism provided in an embodiment of the present invention;

[0028] Figure 5 for Figure 4 Exploded diagram of

[0029] Figure 6 A schematic diagram of the structure of the combined sliding seat and lifting assembly provided in an embodiment of the present invention;

[0030] Figure 7 for Figure 6 Exploded diagram of

[0031] Figure 8 A schematic diagram of the structure of a slide body provided by an embodiment of the present invention;

[0032] Fig. 9 A schematic structural diagram of a core pulling mechanism provided in an embodiment of the present invention;

[0033] Fig.10 An exploded view of the core pulling mechanism provided by an embodiment of the present invention after some screws are removed;

[0034] Fig.11 A partial structural schematic diagram of a second connection assembly provided in an embodiment of the present invention;

[0035] Fig.12A schematic diagram of the partial structure of the limit seat provided in an embodiment of the present invention.

[0036] In the figure:

[0037] 10, fixed mold; 11, fixed mold assembly plate; 111, A plate; 12, fixed mold core; 13, inclined guide column; 14, press seat; 141, first inclined surface; 20, movable mold; 21, movable mold assembly plate; 211, slide groove; 212, B plate; 22, movable mold core; 23, slide seat; 231, inclined hole; 232, first perforation; 233, pinhole; 234, slide body; 2341, positioning groove; 2342, concave cavity; 235, cover body; 236, second inclined surface; 24, lifting assembly; 241, top plate; 242, top Needle; 30, core pulling mechanism; 31, first connecting component; 311, slot; 312, first support rod; 313, first connecting block; 32, second connecting component; 321, second through hole; 322, second support rod; 3221, threaded hole; 323, second connecting block; 324, fastener; 33, limit pin; 34, limit seat; 341, first channel; 342, second channel; 343, positioning plate; 344, support; 3441, mounting hole; 345, block; 346, countersunk hole; 40, product. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0039] See also Figures 1 to 10 As shown, an embodiment of the present invention discloses a mold, including a fixed mold 10, a movable mold 20 and a core pulling mechanism 30, the fixed mold 10 includes a fixed mold assembly plate 11, a fixed mold core 12 and at least one inclined guide column 13, the fixed mold core 12 and the inclined guide column 13 are both installed on one side of the fixed mold assembly plate 11; the movable mold 20 includes a movable mold assembly plate 21, a movable mold core 22, a sliding seat 23 and a lifting assembly 24, the movable mold core 22 and the sliding seat 23 are both installed on one side of the movable mold assembly plate 21, and the sliding seat 23 can slide laterally relative to the movable mold assembly plate 21, the lifting assembly 24 is slidably installed on the sliding seat 23, the sliding seat 23 is provided with at least one inclined hole 231, and the number of the inclined guide column 13 and the number of the inclined hole 231 are both two.

[0040] The core pulling mechanism 30 includes a first connecting component 31, a second connecting component 32, a limit pin 33 and a limit seat 34. The limit seat 34 is installed on the outer wall of the movable mold plate 21 by multiple screws. One end of the first connecting component 31 is fixed to the sliding seat 23 by multiple screws, and the other end is slidably connected to the limit seat 34. One end of the second connecting component 32 is fixedly connected to the lifting component 24 by multiple screws, and the other end is slidably connected to the limit seat 34. The second connecting component 32 is located above the first connecting component 31. The limit pin 33 is vertically arranged. One end of the limit pin 33 is slidably installed on the second connecting component 32, and the other end abuts against the outer wall of the first connecting component 31. The limit pin 33 can slide on the outer wall of the first connecting component 31. The first connecting component 31 is provided with a card groove 311 with a "V"-shaped cross-section.

[0041] When the mold is closed, the inclined guide column 13 is inserted into the inclined hole 231. The inclined guide column 13 pushes the slider 23 to move toward the movable mold core 22 during the downward process. The slider 23, the fixed mold core 12, the movable mold core 22 and the lifting assembly 24 enclose a cavity for molding the product 40. When the mold is opened, the inclined guide column 13 is separated from the inclined hole 231 and drives the slider 23 and the first connecting assembly 31 to move toward the limit seat 34 for a distance. At this time, the lifting assembly 24 protrudes outside the sliding seat 23, so that the product 40 can be ejected from the sliding seat 23 through the lifting component 24, and the product 40 is separated from the sliding seat 23 by core pulling. After the limit pin 33 is engaged with the card slot 311, the inclined guide column 13 drives the sliding seat 23, the first connecting component 31, the second connecting component 32, the lifting component 24 and the limit pin 33 to continue to move toward the side of the limit seat 34, so as to separate the lifting component 24 from the product 40, so as to facilitate the removal of the product 40.

[0042] In this embodiment, the lifting assembly 24 includes a top plate 241 and a plurality of ejector pins 242. The slider seat 23 is provided with a accommodating bin, a first through hole 232 and a plurality of pinholes 233 all connected to the cavity. The first through hole 232 and the pinhole 233 are respectively arranged on both sides of the slider seat 23. The accommodating bin is located in the middle of the slider seat 23. The first through hole 232 and the pinhole 233 are both connected to the accommodating bin. The top plate 241 is slidably installed in the accommodating bin. One end of each ejector pin 242 is connected to the top plate 241 and the other end is respectively located in each pinhole 233. Some of the pinholes 233 and the ejector pins 242 can be tilted as needed. One end of the second connection assembly 32 is slidably connected to the limit seat 34 and the other end is connected to the top plate 241 after passing through the first through hole 232 to position the lifting assembly 24.

[0043] The slide seat 23 includes a slide body 234 and a cover body 235. The movable mold plate 21 is provided with a slide groove 211. The slide body 234 is slidably installed on the slide groove 211 of the movable mold plate 21. The slide body 234 is provided with a positioning groove 2341, a concave cavity 2342 and a plurality of pinholes 233 connected with the concave cavity 2342. The concave cavity 2342 is provided on the inner wall of the positioning groove 2341. The first through hole 232 is provided on the cover body 235. The cover body 235 is installed on the positioning groove 2341 of the slide body 234. The cover body 235 and the inner wall of the concave cavity 2342 enclose the accommodating bin. The inclined hole 231 is provided on the slide body 234. The slide body 234, the fixed mold core 12, the movable mold core 22 and the lifting assembly 24 enclose the cavity.

[0044] Please read further Figures 3 to 7 ,as well as Figures 9 to 12 In this embodiment, the limiting seat 34 is provided with a first channel 341, a second channel 342 and a limiting slideway. The first channel 341 is arranged in parallel with the second channel 342. One end of the limiting slideway is connected to the first channel 341, and the other end is connected to the second channel 342. Part of the first connecting component 31 is slidably installed in the first channel 341, and part of the second connecting component 32 is slidably installed in the second channel 342. The second connecting component 32 is provided with a second through hole 321 connected to the limiting slideway, and one end of the limiting pin 33 is slidably installed in the second through hole 321 along the vertical direction, and the other end passes through the limiting slideway and abuts against the outer wall of the first connecting component 31. When the first connecting component 31 slides relative to the limiting pin 33, so that the limiting pin 33 is engaged in the card groove 311, the limiting pin 33 can slide in the limiting slideway along the moving direction of the first connecting component 31, that is, the lateral direction. At this time, the first connecting component 31, the second connecting component 32 and the limiting pin 33 move laterally together.

[0045] The limiting seat 34 includes a positioning plate 343, a support 344 and a stopper 345. The positioning plate 343 is installed on the outer wall of the movable mold assembly plate 21, the support 344 is fixed on the positioning plate 343, and the stopper 345 is installed on the side of the support 344 away from the positioning plate 343. The first channel 341, the second channel 342 and the limiting slide are all arranged on the support 344. The first channel 341 and the second channel 342 are both arranged horizontally, and the second channel 342 is located on the side of the first channel 341 away from the positioning plate 343. The stopper 345 and the positioning plate 343 respectively block the two ends of the limiting slide to prevent the limiting pin 33 from sliding out of the limiting slide.

[0046] In some embodiments, a “T”-shaped mounting hole 3441 is provided on the top of the support 344 , the mounting hole 3441 is connected to the second channel 342 , and the stopper 345 is also “T”-shaped and is installed in the mounting hole 3441 to reduce the overall height of the limit seat 34 .

[0047] The first connecting component 31 includes a first support rod 312 and a first connecting block 313. The first connecting block 313 is fixedly connected to the slider seat 23. One end of the first support rod 312 is slidably installed in the first channel 341, and the other end is connected to the first connecting block 313, so that the first connecting component 31 can run with the slider seat 23 to position the slider seat 23. The card slot 311 is provided on the first support rod 312.

[0048] The second connecting component 32 includes a second support rod 322 and a second connecting block 323. The second connecting block 323 is connected to the jacking component 24. One end of the second support rod 322 is slidably installed in the second channel 342, and the other end is connected to the second connecting block 323, so that the second connecting component 32 can operate together with the jacking component 24 to position the operation of the jacking component 24. The second through hole 321 is provided on the second support rod 322.

[0049] The second connection component 32 also includes a fastener 324. A countersunk hole 346 connected to the second channel 342 is provided on the side of the limit seat 34 away from the sliding seat 23. The countersunk hole 346 and the second channel 342 are coaxially arranged. The second support rod 322 is provided with a threaded hole 3221. One end of the fastener 324 is located in the countersunk hole 346 and the other end is threadedly connected to the threaded hole 3221 to prevent the second connection component 32 from falling off the limit seat 34. The fastener 324 can slide in the countersunk hole 346. The fastener 324 is a bolt.

[0050] In this embodiment, the fixed mold 10 also includes at least one pressure seat 14 installed on the fixed mold assembly plate 11. The number of pressure seats 14 is two. The pressure seat 14 is provided with a first inclined surface 141, and the sliding seat 23 is provided with a second inclined surface 236. When the mold is closed, the pressure seat 14 descends together with the fixed mold assembly plate 11. During the descending process, the pressure seat 14 will push the sliding seat 23 to move toward the side of the movable mold core 22 until the pressure seat 14 is located between the sliding seat 23 and the limit seat 34, and the first inclined surface 141 abuts against the second inclined surface 236 to complete the mold closing action.

[0051] The fixed mold assembly 11 includes a panel, a runner plate and an A plate 111 connected in sequence. The fixed mold core 12 and the inclined guide column 13 are both installed on the A plate 111. The fixed mold 10 is provided with a glue inlet flow channel, which is connected to the cavity to facilitate the injection of glue into the cavity.

[0052] The movable mold assembly plate 21 includes a bottom plate, a B plate 212 and two square irons, one end of the square iron is connected to the bottom plate, and the other end of the square iron is connected to the B plate 212. The movable mold core 22 and the core pulling mechanism 30 are both installed on the B plate 212. The movable mold 20 can also be provided with an ejection mechanism with the same structure as the lifting assembly 24 to facilitate ejecting and separating the product 40 from the movable mold core 22. Of course, if the quality requirements of the product 40 are not high, the ejection mechanism in the movable mold 20 can also be omitted.

[0053] Working principle of the mold:

[0054] When the mold is opened, the inclined guide column 13 runs with the fixed mold assembly plate 11 and disengages from the inclined hole 231. The inclined guide column 13 drives the sliding seat 23 and the first connecting component 31 to run a distance of about 15 mm toward the side close to the limit seat 34. The sliding seat 23 is separated from the product 40, and the lifting component 24 is stationary. At this time, the lifting component 24 protrudes outside the sliding seat 23 and abuts against the product 40 to achieve core pulling. Under the action of its own gravity, the limit pin 33 is engaged with the card slot 311. The inclined guide column 13 can drive the sliding seat 23, the first connecting component 31, the second connecting component 32, the lifting component 24 and the limit pin 33 to continue running about 34 mm toward the side close to the limit seat 34, so that the lifting component 24 is also separated from the product 40, so as to facilitate the removal of the product 40.

[0055] When the mold is closed, the inclined guide column 13 is inserted into the inclined hole 231, and the inclined guide column 13 drives the sliding seat 23, the first connecting component 31, the second connecting component 32, the lifting component 24 and the limit pin 33 to move about 34 mm away from the limit seat 34. After the lifting component 24 is in place, the lifting component 24 and the second connecting component 32 stop moving, and the limit pin 33 is disengaged from the slot 311 under the action of external force. The inclined guide column 13 drives the sliding seat 23 and the first connecting component 31 to continue to move about 15 mm away from the limit seat 34. The sliding seat 23, the fixed mold core 12, the movable mold core 22 and the lifting component 24 enclose a cavity for molding the product 40.

[0056] To sum up, the core pulling mechanism 30 is used in the present invention to replace the previous traditional oil cylinder. The core pulling mechanism 30 can drive the sliding seat 23 and the lifting assembly 24 to perform corresponding reciprocating operation with the cooperation of the sliding seat 23 and the inclined guide column 13, which saves the cost of the oil cylinder, has a simple structure, optimizes the mold structure, stabilizes the injection molding production, and is suitable for large-scale promotion.

[0057] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A mold, characterized in that: include: The fixed die comprises a fixed die assembly plate, a fixed die core and at least one inclined guide column, wherein the fixed die core and the inclined guide column are both mounted on the fixed die assembly plate; The movable mold comprises a movable mold assembly plate, a movable mold core, a sliding seat and a lifting assembly, wherein the movable mold core and the sliding seat are both mounted on the movable mold assembly plate, and the sliding seat can slide relative to the movable mold assembly plate, the lifting assembly is slidably mounted on the sliding seat, and the sliding seat is provided with at least one inclined hole; The core pulling mechanism comprises a first engaging component, a second engaging component, a limit pin and a limit seat, wherein the limit seat is installed on the outer wall of the movable mold assembly plate, one end of the first engaging component is fixed on the sliding seat, and the other end is slidably connected to the limit seat, one end of the second engaging component is fixedly connected to the lifting component, and the other end is slidably connected to the limit seat, one end of the limit pin is slidably installed on the second engaging component, and the other end is abutted against the first engaging component, and the first engaging component is provided with a card slot; When the mold is closed, the inclined guide column is inserted into the inclined hole, and the sliding seat, the fixed mold core, the movable mold core and the lifting assembly are combined to form a cavity for molding a product; when the mold is opened, the inclined guide column disengages from the inclined hole and drives the sliding seat and the first connecting assembly to move toward the side of the limit seat, and the lifting assembly protrudes outside the sliding seat to eject the product from the sliding seat. After the limit pin is engaged with the slot, the inclined guide column drives the sliding seat, the first connecting assembly, the second connecting assembly, the lifting assembly and the limit pin to continue moving toward the side of the limit seat to separate the product from the lifting assembly.

2. The mold according to claim 1, characterized in that: The lifting assembly includes a lift plate and a plurality of lift pins. The sliding seat is further provided with a accommodating bin, a first through-hole, and a plurality of pinholes all connected to the cavity. The first through-hole and the pinholes are both connected to the accommodating bin. The lift plate is slidably installed in the accommodating bin. One end of each of the lift pins is connected to the lift plate, and the other end is respectively located in each of the pinholes. One end of the second connection assembly is slidably connected to the limit seat, and the other end is connected to the lift plate after passing through the first through-hole.

3. The mold according to claim 2, characterized in that: The slide seat includes a slide body and a cover body, the slide body is slidably mounted on the movable mold plate, the slide body is provided with a concave cavity and a plurality of pinholes connected to the concave cavity, the first through hole is provided on the cover body, the cover body is installed on the slide body and encloses the inner wall of the concave cavity to form the accommodating bin, and the inclined hole is provided on the slide body.

4. The mold according to claim 1, characterized in that: The limit seat is provided with a first channel, a second channel and a limit slide, the first channel is arranged in parallel with the second channel, one end of the limit slide is connected with the first channel, and the other end is connected with the second channel, the first connecting component is slidably installed in the first channel, and the second connecting component is slidably installed in the second channel, the second connecting component is provided with a second through hole connected with the limit slide, and one end of the limit pin is slidably installed in the second through hole, and the other end passes through the limit slide and abuts against the outer wall of the first connecting component. When the limit pin is engaged with the slot, the limit pin can slide in the limit slide along the moving direction of the first connecting component.

5. The mold according to claim 4, characterized in that: The limiting seat includes a positioning plate, a support and a stopper, the positioning plate is installed on the outer wall of the movable mold plate, the support is fixed on the positioning plate, the stopper is installed on the side of the support away from the positioning plate, the first channel, the second channel and the limiting slide are all arranged on the support, the second channel is located on the side of the first channel away from the positioning plate, and the stopper and the positioning plate respectively block the two ends of the limiting slide.

6. The mold according to claim 4, characterized in that: The first connection assembly includes a first support rod and a first connection block, the first connection block is fixedly connected to the sliding seat, one end of the first support rod is slidably installed in the first channel, and the other end is connected to the first connection block, and the slot is provided on the first support rod.

7. The mold according to claim 4, characterized in that: The second connecting assembly includes a second support rod and a second connecting block, the second connecting block is connected to the lifting assembly, one end of the second support rod is slidably installed in the second channel, and the other end is connected to the second connecting block, and the second through hole is provided on the second support rod.

8. The mold according to claim 7, characterized in that: The second connection assembly also includes a fastener, a countersunk hole connected to the second channel is provided on the side of the limit seat away from the sliding seat, the second support rod is provided with a threaded hole, one end of the fastener is located in the countersunk hole, and the other end is threadedly connected to the threaded hole.

9. The mold according to claim 1, characterized in that: The fixed mold also includes at least one pressure seat installed on the fixed mold assembly plate, the pressure seat is provided with a first inclined surface, and the sliding seat is provided with a second inclined surface. When the mold is closed, the pressure seat is located between the sliding seat and the limiting seat, and the first inclined surface abuts against the second inclined surface.

10. The mold according to claim 1, characterized in that: The fixed die assembly plate comprises a face plate, a flow channel plate and an A plate connected in sequence, and the fixed die core and the inclined guide column are both mounted on the A plate; and / or, The movable mold assembly plate includes a bottom plate, a B plate and two square irons, one end of the square iron is connected to the bottom plate, and the other end of the square iron is connected to the B plate, and the movable mold core and the core pulling mechanism are both installed on the B plate.

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