An out-of-die cooling and sizing mechanism

Abstract

The utility model relates to mould technical field, concretely relates to a mould outside cooling shaping mechanism, including mould sub -die, mould sub -die includes first sub -die plate and second sub -die plate, first sub -die plate is provided with the material beating plate to one side of second sub -die plate, the side of second sub -die plate is provided with the baffle to one side of first sub -die plate, the side of material beating plate is provided with a plurality of first air -blowing holes to the baffle, the side of baffle is provided with a plurality of third air -blowing holes to material beating plate. Through first air inlet channel, second air inlet channel, each second air -blowing hole and each fourth air -blowing hole cooperation, the bottom of bottle plays the role of blowing cooling, reduces the cooling time of bottle in mould main part, and the production efficiency is relatively higher, and the bottom of bottle plays the role of blowing and lifting up simultaneously, does not need to adopt the mode of concave deepening in the central area of bottle bottom, effectively avoids the situation that the shoulder and the bottom of bottle are easily damaged when ejecting in mould opening, and the bottle bad rate is lower.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to an external cooling and shaping mechanism. Background Technology

[0002] Blow molding is a commonly used technology in the production of plastic bottles. The tubular plastic preform obtained by extrusion or injection molding of thermoplastic resin is placed in a split mold under softening temperature conditions. After the mold is closed, hot compressed air is introduced into the preform, causing the plastic preform to inflate and adhere tightly to the inner wall of the mold. After cooling and demolding, the plastic bottle is obtained.

[0003] However, existing blow molding molds all use a cooling mechanism inside the blown needle rod to cool the bottle body during blow molding. If the bottle bottom is too thick, insufficient cooling during the cooling process will cause the central area of ​​the bottle bottom to not be completely cooled and solidified. The central area of ​​the bottle bottom is prone to sagging and deformation due to its own weight. In order to ensure that the central area of ​​the thick bottle bottom does not deform, the cooling time is usually extended in production, which results in a long cycle and low production efficiency. If the central area of ​​the bottle bottom is deepened to ensure that the central area of ​​the thick bottle bottom does not deform, the shoulder and bottom of the bottle are prone to demolding damage during ejection when the mold is opened, resulting in a high defect rate.

[0004] In view of this, the applicant has conducted in-depth research on the above-mentioned issues, which led to this case. Utility Model Content

[0005] The purpose of this invention is to provide an external cooling and shaping mechanism with high production efficiency and low defect rate.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An external cooling and shaping mechanism includes a mold sub-mold. The mold sub-mold includes a first sub-template and a second sub-template arranged vertically relative to each other. A ejector plate, parallel to the first sub-template, is disposed on the side of the first sub-template facing the second sub-template. A baffle plate, parallel to the ejector plate, is disposed on the side of the second sub-template facing the first sub-template. The ejector plate and the baffle plate are located on the same horizontal plane. A driving assembly for driving the ejector plate to move towards the baffle plate is disposed on the first sub-template. A bottle positioning assembly is disposed between the first and second sub-templates, located above the ejector plate. The ejector plate has a first air inlet channel extending along its length, and the baffle plate has a second air inlet channel extending along its length. A blockage is disposed at one end of the first air inlet channel and one end of the second air inlet channel. The side of the ejector plate facing the baffle plate... The assembly includes multiple first air inlets that communicate with the first air inlet channel and are spaced apart along the length of the ejector plate. The upper end of the ejector plate also has multiple second air inlets that communicate with the first air inlet channel and are spaced apart along the length of the ejector plate. A baffle plate has multiple third air inlets that communicate with the second air inlet channel on its side facing the ejector plate. The upper end of the baffle plate also has multiple fourth air inlets that communicate with the second air inlet channel. Each first and third air inlet is arranged in a one-to-one correspondence with each other, as are each second and fourth air inlets. Each second air inlet gradually slopes upwards from its end connected to the first air inlet channel to the other end, and each fourth air inlet gradually slopes upwards from its end connected to the second air inlet channel to the other end. Both the second and fourth air inlets face the bottom of the bottle positioning assembly.

[0008] As an improvement of this utility model, the driving assembly includes a first cylinder with a piston rod facing the second sub-template. The first cylinder is fixedly connected to the first sub-template, and the piston rod of the first cylinder is fixedly connected to at least one first connecting rod. Each first connecting rod is fixedly connected to the ejector plate.

[0009] As an improvement of this utility model, the bottle positioning assembly includes a first positioning plate, a second positioning plate, a third positioning plate, and a fourth positioning plate. The first and third positioning plates are both fixed to the first sub-template and are arranged in parallel. The second and fourth positioning plates are both fixed to the second sub-template and are arranged in parallel. The first positioning plate is located above the third positioning plate, and the third positioning plate is located above the feeding plate. The first and second positioning plates are arranged in parallel and on the same horizontal plane. The third and fourth positioning plates are arranged in parallel and on the same horizontal plane. At least one first positioning groove is provided on the side of the positioning plates that are close to each other. The first positioning grooves on the first positioning plate and the first positioning grooves on the second positioning plate are arranged in a one-to-one correspondence. The two first positioning grooves arranged in a one-to-one correspondence together form a bottle body clamping cavity. At least one second positioning groove is provided on the side of the third positioning plate and the fourth positioning plate that are close to each other. The second positioning grooves on the third positioning plate and the second positioning grooves on the fourth positioning plate are arranged in a one-to-one correspondence. The two second positioning grooves arranged in a one-to-one correspondence together form a bottle bottom clamping cavity. The first positioning grooves on the first positioning plate and the second positioning grooves on the third positioning plate are arranged in a one-to-one correspondence.

[0010] As an improvement of this utility model, the feeding plate is provided with a first water inlet channel extending along its length direction, the first water inlet channel and the first air inlet channel are arranged in parallel, and the baffle plate is provided with a second water inlet channel extending along its length direction, the second water inlet channel and the second air inlet channel are arranged in parallel.

[0011] As an improvement of this utility model, the arrangement direction of the first water inlet channel and the first air inlet channel is the same as the arrangement direction of the first sub-template and the second sub-template, and the arrangement direction of the second water inlet channel and the second air inlet channel is the same as the arrangement direction of the first sub-template and the second sub-template.

[0012] As an improvement of this utility model, a guide tube is fixedly installed on the side of the second sub-template away from the first sub-template, and is arranged perpendicularly to the second sub-template. A second connecting rod is horizontally slidably connected inside the guide tube. The two ends of the second connecting rod respectively protrude from the two ends of the guide tube. A second through hole is opened on the second sub-template for the connecting rod to pass through. One end of the second connecting rod is located between the first sub-template and the second sub-template, and the other end of the second connecting rod is located on the side of the second sub-template away from the first sub-template. A plug is fixedly connected to the end of the second connecting rod on the side of the second sub-template away from the first sub-template. The outer diameter of the plug is larger than the inner diameter of the guide tube. The other end of the second connecting rod is fixedly connected to the blocking plate. An elastic element is sleeved on the second connecting rod at the position between the second sub-template and the blocking plate. One end of the elastic element is fixedly connected to the blocking plate, and the other end of the elastic element is fixedly connected to the side of the second sub-template facing the first sub-template.

[0013] As an improvement of this utility model, the distance between two adjacent first air holes is 8-12mm, and the diameter of each first air hole is 2.5-4mm.

[0014] By adopting the above technical solution, this utility model has the following beneficial effects:

[0015] The combination of the first air inlet channel, the second air inlet channel, the second air blowing holes, and the fourth air blowing holes cools the bottom of the bottle, reducing the cooling time of the bottle in the mold body and resulting in relatively high production efficiency. At the same time, the air blowing also lifts the bottom of the bottle upwards, eliminating the need for a concave deepening of the central area of ​​the bottle bottom. This effectively avoids the problem of the bottle's shoulder and bottom being easily damaged during ejection when the mold is opened, resulting in a low defect rate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an external cooling and shaping mechanism according to the present invention;

[0017] Figure 2 This is a cross-sectional view of an external cooling and shaping mechanism according to the present invention.

[0018] The corresponding markings in the diagram are as follows:

[0019] 10 - Mold body; 20 - Mold sub-mold;

[0020] 21 - First template; 22 - Second template;

[0021] 23-Discharge plate; 24-Blocking plate;

[0022] 25 - First air intake passage; 26 - Second air intake passage;

[0023] 27-First air inlet; 28-Second air inlet;

[0024] 29 - Third air inlet; 30 - Fourth air inlet;

[0025] 31-First cylinder; 32-First connecting rod;

[0026] 33-First positioning plate; 34-Second positioning plate;

[0027] 35 - Third positioning plate; 36 - Fourth positioning plate;

[0028] 37 - First positioning groove; 38 - Second positioning groove;

[0029] 39 - First water inlet channel; 40 - Second water inlet channel;

[0030] 41-Guide tube; 42-Second connecting rod;

[0031] 43 - Plug; 44 - Elastic element. Detailed Implementation

[0032] The utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and drawings of this utility model are used to distinguish different objects, rather than to describe a specific order.

[0034] like Figures 1-2 As shown, this embodiment provides an external cooling and shaping mechanism, including a mold sub-mold 20. In use, the mold sub-mold 20 is fixedly installed on one side of the mold body 10 (this mold body 10 is not part of this embodiment and needs to be configured separately during use). It should be noted that the mold body 10 is a conventional blow molding mold. The mold body 10 includes a moving template and a fixed template arranged relatively vertically. The mold sub-mold 20 includes a first sub-template 21 and a second sub-template 22 arranged relatively vertically. The moving template and the first sub-template 21 are located on the same plane, while the fixed template and the second sub-template 22 are located on... On the same plane, the first template 21 facing the mold body 10 is fixedly connected to the moving template through a connector, and the second template 22 facing the mold body is fixedly connected to the fixed template through a connector. The specific installation methods between the moving template and the first template 21, as well as between the fixed template and the second template 22, are conventional and will not be detailed here. With this setup, when the mold body 10 opens, the first template 21 and the second template 22 open accordingly, and when the mold body 10 closes, the first template 21 and the second template 22 close accordingly.

[0035] A feeding plate 23, parallel to the first template 21, is provided on the side of the first template 21 facing the second template 22. A blocking plate 24, parallel to the feeding plate 23, is provided on the side of the second template 22 facing the first template 21. The feeding plate 23 and the blocking plate 24 are located on the same horizontal plane. A driving assembly is provided on the first template 21 to drive the feeding plate 23 to move towards the blocking plate 24. A bottle positioning assembly is provided between the first template 21 and the second template 22, located above the feeding plate 23. The bottle positioning assembly positions the bottle between the first template 21 and the second template 22. The ejector plate 23 has a first air inlet channel 25 extending along its length, and the baffle plate 24 has a second air inlet channel 26 extending along its length. One end of the first air inlet channel 25 and one end of the second air inlet channel 26 are respectively blocked. The ejector plate 23 has multiple first air blowing holes 27 on the side facing the baffle plate 24, communicating with the first air inlet channel 25 and spaced apart along the length of the ejector plate 23. The upper end of the ejector plate 23 has multiple... Second air holes 28 are arranged at intervals along the length of the ejector plate 23 and are connected to the first air intake channel 25. Multiple third air holes 29 connected to the second air intake channel 26 are provided on the side of the baffle plate 24 facing the ejector plate 23. Multiple fourth air holes 30 connected to the second air intake channel 26 are provided at the upper end of the baffle plate 24. Each first air hole 27 and each third air hole 29 is arranged in a one-to-one correspondence, and each second air hole 28 and each fourth air hole 30 is also arranged in a one-to-one correspondence. In this embodiment, the spacing between two adjacent first air holes 27 is 8-12m. m, the diameter of each first air inlet 27 is 2.5-4mm, the size of each first air inlet 27 and each third air inlet 29 is the same, the size of each second air inlet 28 and each fourth air inlet 30 is the same, each second air inlet 28 is arranged to gradually slope upward from one end connected to the first air inlet channel 25 to the other end, each fourth air inlet 30 is arranged to gradually slope upward from one end connected to the second air inlet channel 26 to the other end, and each second air inlet 28 and each fourth air inlet 30 faces the bottom of the bottle positioning assembly.

[0036] The bottle positioning assembly includes a first positioning plate 33, a second positioning plate 34, a third positioning plate 35, and a fourth positioning plate 36. The first positioning plate 33 and the third positioning plate 35 are both fixed to the first template 21 and are arranged in parallel. The second positioning plate 34 and the fourth positioning plate 36 are both fixed to the second template 22 and are arranged in parallel. The first positioning plate 33 is located above the third positioning plate 35, and the third positioning plate 35 is located above the feeding plate 23. The first positioning plate 33 and the second positioning plate 34 are arranged in parallel and on the same horizontal plane. The third positioning plate 35 and the fourth positioning plate 36 are arranged in parallel and on the same horizontal plane. At least one first positioning groove 37 is provided on the side of the first positioning plate 33 and the second positioning plate 34 that are close to each other. Each first positioning groove 37 on the first positioning plate 33 and each first positioning groove 37 on the second positioning plate 34 are arranged in a one-to-one correspondence. The two corresponding first positioning grooves 37 together form a total of [missing information]. The first positioning plate 35 and the fourth positioning plate 36 are respectively provided with at least one second positioning groove 38 on their adjacent sides. The second positioning grooves 38 on the third positioning plate 35 and the second positioning grooves 38 on the fourth positioning plate 36 are arranged in a one-to-one correspondence. The two corresponding second positioning grooves 38 together form a bottle bottom clamping cavity for clamping the bottle bottom. The first positioning grooves 37 on the first positioning plate 33 and the second positioning grooves 38 on the fourth positioning plate 36 are respectively provided with at least one second positioning groove 38 on their adjacent sides. Each of the second positioning grooves 37 on the positioning plate 35 is arranged in a corresponding manner. When in use, the main mold 10 closes, which drives the secondary mold 20 to close. The bottle body is embedded in the bottle body clamping cavity, and the bottle bottom is embedded in the bottle bottom clamping cavity, so that the first positioning plate 33 and the second positioning plate 34 clamp the bottle body, and the third positioning plate 35 and the fourth positioning plate 36 clamp the bottle bottom, thereby achieving the positioning and fixing of the bottle. Each of the second air holes 28 and each of the fourth air holes 30 face the bottle body clamping cavity.

[0037] The ejector plate 23 is provided with a first water inlet channel 39 extending along its length. The first water inlet channel 39 and the first air inlet channel 25 are arranged in parallel. The baffle plate 24, away from the mold body 10, is provided with a second water inlet channel 40 extending along its length. The second water inlet channel 40 and the second air inlet channel 26 are arranged in parallel. The arrangement direction of the first water inlet channel 39 and the first air inlet channel 25 is the same as the arrangement direction of the first sub-template 21 and the second sub-template 22. The arrangement direction of the second water inlet channel 40 and the second air inlet channel 26 is the same as the arrangement direction of the first sub-template 21 and the second sub-template 22. At the same time, both ends of the first water inlet channel 39 are connected to the cooling water circulation channel, and both ends of the second water inlet channel 40 are connected to the cooling water circulation channel. It should be noted that the cooling water circulation channel is not part of the external cooling and shaping mechanism provided in this embodiment, and needs to be configured separately during use. The water in the cooling water circulation channel flows from one end of the first water inlet channel 39 to the other end and cools the gas in the first air intake channel 25. The water in the cooling water circulation channel flows from one end of the second water inlet channel 40 to the other end and cools the gas in the second air intake channel 26, further improving the cooling efficiency.

[0038] A guide tube 41, perpendicular to the second template 22, is fixedly installed on the side of the second template 22 away from the first template 21. A second connecting rod 42 is horizontally slidably connected inside the guide tube 41. Both ends of the second connecting rod 42 protrude from the two ends of the guide tube 41. A second through hole (not shown in the figure) is provided on the second template 22 for the second connecting rod 42 to pass through. One end of the second connecting rod 42 is located between the first template 21 and the second template 22, and the other end is located on the side of the second template 22 away from the first template 21. A plug 43 is fixedly connected to one end of the second connecting rod 42 on the side of the second template 22 away from the first template 21. The outer diameter of the plug 43 is larger than the inner diameter of the guide tube 41. The other end of the second connecting rod 42 is fixedly connected to the blocking plate 24. An elastic element 44 is sleeved on the second connecting rod 42 at the position between the second template 22 and the blocking plate 24. In this embodiment, the elastic element 44 is a spring. One end of the elastic element 44 is fixedly connected to the blocking plate 24, and the other end of the elastic element 44 is fixedly connected to the side of the second template 222 facing the first template 21.

[0039] The drive assembly includes a first cylinder 31 with a piston rod facing the second sub-template 22. The first cylinder 31 is fixedly connected to the first sub-template 21. In this embodiment, the side away from the second sub-template 22 is provided with a first through hole (not shown in the figure) for the piston rod of the first cylinder 31 to pass through. The piston rod of the first cylinder 31 is fixedly connected to at least one first connecting rod 32, and each first connecting rod 32 is fixedly connected to the ejector plate 23.

[0040] Before use, the mold sub-mold 20 is fixedly installed on one side of the mold body 10. The mold body 10 is installed on a molding machine, which has a frame. A blanking station, a molding station, and a sub-mold station are arranged sequentially in a straight line on the frame. Specifically, the mold body 10 is slidably connected to the molding station. A conventional preform extrusion mechanism is fixed above the blanking station on the frame, and a conventional blow-needle frame is fixed above the molding station on the frame. A conventional blow-needle rod that can be raised and lowered along the vertical direction of the frame is fixed on the blow-needle frame. The mold sub-mold 20 is located at the sub-mold station. The molding machine with the above structure is a conventional molding machine, and this molding machine is not part of this embodiment; it needs to be configured separately during use. During use, after the preform inside the mold body 10 is blow-molded into a bottle, the mold... The main body 10 opens, driving the secondary mold 20 to open as well. The formed bottle is suspended on the blow-off rod. When the main body 10 slides to the unloading station, it drives the secondary mold 20 to slide to the forming station. The main body 10 closes, driving the secondary mold 20 to close as well. The bottle is positioned between the first and second templates 21 and 22 by the bottle positioning assembly. At this time, the bottle body is embedded in the bottle body clamping cavity, and the bottle bottom is embedded in the bottle bottom clamping cavity. Each second blow-off hole 28 and each fourth blow-off hole 30 is directly facing the bottom of the formed bottle, and each first blow-off hole 27 and each third blow-off hole 29 is directly facing the remaining material at the tail of the formed bottle. Then the blow-off rod disengages from the bottle mouth. The unblocked end of the first air inlet channel 25 is connected to the circulating air path, and the second air inlet... One end of channel 26 without any obstruction is connected to the circulating air path. It should be noted that the circulating air path is not part of the external cooling and shaping mechanism provided in this embodiment and needs to be configured separately during use. The gas in the circulating air path is delivered to the bottom of the bottle through each of the second air holes 28 and each of the fourth air holes 30, and the bottom of the bottle is cooled by blowing air. The gas in the circulating air path is delivered to the remaining material at the tail of the bottle through each of the first air holes 27 and each of the third air holes 29, and the remaining material at the tail of the bottle is cooled by blowing air. The piston rod of the first cylinder 31 extends, causing the ejector plate 23 to move towards the baffle plate 24 until it abuts against the baffle plate 24. The remaining material at the tail of the bottle is clamped between the ejector plate 23 and the baffle plate 24. The piston rod of the first cylinder 31 continues to extend and... The compression of the baffle plate 24 causes it to move towards the second sub-mold plate 22. The piston rod of the first cylinder 31 retracts, and the baffle plate 24 resets under the action of the elastic element 44, thus removing excess material from the bottle's tail. The mold body 10 opens, causing the mold sub-mold 20 to open as well, allowing the cooled bottle to detach from the mold sub-mold 20. Finally, the mold body 10 slides back to the molding station, pulling the mold sub-mold 20 back to its sub-mold station. This cycle repeats continuously. Through the cooperation of the first air inlet channel 25, the second air inlet channel 26, each second air blowing hole 28, and each fourth air blowing hole 30, the bottom of the bottle is cooled by blowing air, reducing the cooling time of the bottle within the mold body 10 and resulting in relatively high production efficiency.Simultaneously, it acts as an air insulator to lift the bottom of the bottle, eliminating the need for a recessed and deepened center area at the bottom. This effectively prevents damage to the shoulder and bottom of the bottle during mold opening, resulting in a lower defect rate.

[0041] The present invention has been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the above embodiments. Those skilled in the art can make various modifications to the present invention based on the prior art, and these modifications all fall within the protection scope of the present invention.

Claims

1. An external cooling and shaping mechanism, characterized in that, The mold includes a sub-mold, comprising a first sub-template and a second sub-template arranged vertically. A ejector plate, parallel to the first sub-template, is positioned on the side of the first sub-template facing the second sub-template. A baffle plate, parallel to the ejector plate, is positioned on the side of the second sub-template facing the first sub-template. The ejector plate and the baffle plate are on the same horizontal plane. A driving assembly is provided on the first sub-template to move the ejector plate towards the baffle plate. A bottle positioning assembly is positioned between the first and second sub-templates, above the ejector plate. The ejector plate has a first air inlet channel extending along its length, and the baffle plate has a second air inlet channel extending along its length. A blockage is provided at one end of the first air inlet channel and one end of the second air inlet channel. Multiple [unclear] openings are provided on the side of the ejector plate facing the baffle plate. A first air-blowing hole is provided, which is connected to the first air inlet channel and is spaced apart along the length of the feeding plate. A plurality of second air-blowing holes are provided at the upper end of the feeding plate, which are connected to the first air inlet channel and are spaced apart along the length of the feeding plate. A plurality of third air-blowing holes are provided on the side of the baffle plate facing the feeding plate, which are connected to the second air inlet channel. A plurality of fourth air-blowing holes are provided at the upper end of the baffle plate, which are connected to the second air inlet channel. Each first air-blowing hole and each third air-blowing hole are arranged in a one-to-one correspondence. Each second air-blowing hole is arranged with a gradual upward inclination from the end connected to the first air inlet channel to the other end. Each fourth air-blowing hole is arranged with a gradual upward inclination from the end connected to the second air inlet channel to the other end. Both the second air-blowing hole and the fourth air-blowing hole face the bottom of the bottle positioning assembly.

2. The external cooling and shaping mechanism according to claim 1, characterized in that, The drive assembly includes a first cylinder with a piston rod facing the second sub-template. The first cylinder is fixedly connected to the first sub-template. The piston rod of the first cylinder is fixedly connected to at least one first connecting rod, and each first connecting rod is fixedly connected to the ejector plate.

3. The external cooling and shaping mechanism according to claim 1, characterized in that, The bottle positioning assembly includes a first positioning plate, a second positioning plate, a third positioning plate, and a fourth positioning plate. The first and third positioning plates are both fixed to the first sub-template and are arranged in parallel. The second and fourth positioning plates are both fixed to the second sub-template and are arranged in parallel. The first positioning plate is located above the third positioning plate, and the third positioning plate is located above the feeding plate. The first and second positioning plates are arranged in parallel and on the same horizontal plane, and the third and fourth positioning plates are arranged in parallel and on the same horizontal plane, with the first and second positioning plates close to each other. At least one first positioning groove is provided on one side of each of the three positioning plates. The first positioning grooves on the first positioning plate and the first positioning grooves on the second positioning plate are arranged in a one-to-one correspondence. The two first positioning grooves arranged in a one-to-one correspondence together form a bottle body clamping cavity. At least one second positioning groove is provided on the side of the third positioning plate and the fourth positioning plate that are close to each other. The second positioning grooves on the third positioning plate and the second positioning grooves on the fourth positioning plate are arranged in a one-to-one correspondence. The two second positioning grooves arranged in a one-to-one correspondence together form a bottle bottom clamping cavity. The first positioning grooves on the first positioning plate and the second positioning grooves on the third positioning plate are arranged in a one-to-one correspondence.

4. The external cooling and shaping mechanism according to claim 1, characterized in that, The feeding plate is provided with a first water inlet channel extending along its length direction, and the first water inlet channel and the first air inlet channel are arranged in parallel. The baffle plate is provided with a second water inlet channel extending along its length direction, and the second water inlet channel and the second air inlet channel are arranged in parallel.

5. The external cooling and shaping mechanism according to claim 4, characterized in that, The arrangement direction of the first water inlet channel and the first air inlet channel is the same as the arrangement direction of the first sub-template and the second sub-template, and the arrangement direction of the second water inlet channel and the second air inlet channel is the same as the arrangement direction of the first sub-template and the second sub-template.

6. The external cooling and shaping mechanism according to claim 1, characterized in that, A guide tube, perpendicular to the second sub-template, is fixedly installed on the side of the second sub-template away from the first sub-template. A second connecting rod is horizontally slidably connected inside the guide tube, with both ends of the second connecting rod extending out of the guide tube. A second through hole is provided on the second sub-template for the connecting rod to pass through. One end of the second connecting rod is located between the first and second sub-templates, and the other end is located on the side of the second sub-template away from the first sub-template. A plug is fixedly connected to the end of the second connecting rod on the side of the second sub-template away from the first sub-template. The outer diameter of the plug is larger than the inner diameter of the guide tube. The other end of the second connecting rod is fixedly connected to the blocking plate. An elastic element is sleeved on the second connecting rod at the position between the second sub-template and the blocking plate. One end of the elastic element is fixedly connected to the blocking plate, and the other end is fixedly connected to the side of the second sub-template facing the first sub-template.

7. The external cooling and shaping mechanism according to claim 1, characterized in that, The distance between two adjacent first air holes is 8-12mm, and the diameter of each first air hole is 2.5-4mm.

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