Injection molding machine for producing high-impact-resistance anti-deformation PET cosmetic bottle

Abstract

The utility model relates to an injection molding machine for producing a high-impact-resistance anti-deformation PET cosmetic bottle, and relates to the technical field of injection molding machinery, the injection molding machine comprises a rack, a template is arranged on the rack in a horizontal sliding manner, an injection device is arranged on the rack, the injection device is used for injecting PET plastic into the template, and a cooling mechanism is arranged on the rack. Cold water is poured to the mold plate through water flowing of the cooling pipe, so that the mold plate is rapidly cooled, the mold cooling forming time is shortened, the production efficiency is greatly improved, meanwhile, the mold plate is blown through the air blower, on one hand, the mold plate cooling time is shortened, and on the other hand, hot steam generated by evaporation after cold water is heated is blown away. Ambient air around the template circulates, so that the heat dissipation effect of the template is ensured; and the water receiving assembly receives residual water after cooling, so that the probability that the working environment is polluted due to the fact that the water is scattered in the working environment is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of injection molding machinery, and in particular to an injection molding machine for producing highly impact-resistant and deformation-resistant PET cosmetic bottles. Background Art

[0002] Injection molding machine is a widely used plastic processing equipment, which is mainly used to heat and melt plastic raw materials and then inject them into the mold through high pressure. Injection molding machine has the advantages of high production efficiency, low cost and high product precision, so it is widely used in industrial production.

[0003] In the related art, reference can be made to the Chinese utility model patent with authorization announcement number CN205272529U, which discloses an injection molding machine, including a machine body and an injection device and a clamping device arranged on the machine body; the injection device includes a nozzle, a barrel connected to the nozzle, a screw arranged in the barrel, a motor connected to the screw, and an injection hydraulic cylinder connected to the barrel; a heater is provided outside the barrel; the clamping device includes a vertically arranged fixed template, a movable template and a push rod passing through the fixed template; the movable template is connected to the nozzle and can move with the movement of the injection device; the side of the movable template facing away from the nozzle is a concave surface, and the side of the fixed template opposite to the movable template is a convex surface; the push rod is inserted into the top of the fixed template and can be integrated with the convex surface of the fixed template.

[0004] However, in actual production applications of the above-mentioned injection molding machine, after the injection device injects into the template, it is necessary to wait for the model in the template to cool and form before the template can be opened to take out the model and then perform injection molding of the next model. However, the injection molding temperature is generally high, so waiting for it to cool naturally will cause the injection molding machine to have a lot of idle time, and the production efficiency is low. Utility Model Content

[0005] In order to improve the production efficiency of the injection molding machine, the present application provides an injection molding machine for producing high-impact-resistant and anti-deformation PET cosmetic bottles.

[0006] The present application provides an injection molding machine for producing high impact-resistant and anti-deformation PET cosmetic bottles, which adopts the following technical solution:

[0007] An injection molding machine for producing high impact-resistant and deformation-resistant PET cosmetic bottles, comprising a frame, a template is horizontally slidably arranged on the frame, an injection device is arranged on the frame, the injection device is used to inject PET plastic into the template, a cooling mechanism is arranged on the frame, the cooling mechanism is used to cool the template, and the cooling mechanism comprises:

[0008] A cooling pipe, which is arranged on the frame and connected to a water source, and is used to pour cold water into the template;

[0009] A blower, which is arranged on the frame and is used to blow air to the template;

[0010] A water receiving assembly is arranged on the frame and is used to receive water flowing down the template.

[0011] By adopting the above technical solution, after the injection device performs injection molding on the template, water is passed through the cooling pipe to pour cold water onto the template, thereby quickly cooling the template and reducing the time for cooling and molding the model, greatly improving production efficiency. At the same time, the template is blown by the blower, which, on the one hand, speeds up the cooling time of the template, and on the other hand, blows away the hot steam generated by the evaporation of the cold water after being heated, so that the ambient air around the template circulates, ensuring the heat dissipation effect of the template itself; the water receiving component receives the remaining water after cooling, reducing the probability of water spilling into the working environment and causing pollution to the working environment.

[0012] Optionally, a water flow channel is provided inside the template, and a water injection hole and a water outlet hole connected to the water flow channel are provided on the template.

[0013] By adopting the above technical solution, a water flow channel is opened in the template, and the cooling pipe injects cold water into the water flow channel through the water injection hole. The cold water cools the model and the mold through the water flow channel inside the mold, thereby greatly improving the cooling effect of the cold water on the model and the mold, and reducing the probability of water splashing in the working environment, thereby improving work efficiency and protecting the cleanliness of the working environment.

[0014] Optionally, the water receiving component includes:

[0015] A water receiving trough, which is arranged on the frame and below the water outlet of the template;

[0016] The condensation plate is arranged on the water receiving trough, and the condensation plate is located on a side of the template away from the blower.

[0017] By adopting the above technical solution, the water receiving trough below the template receives the water flowing out of the water outlet of the template. After the condensation plate receives the hot steam blown by the blower, it condenses part of the moisture in the hot steam and then flows it into the water receiving trough, thereby fully receiving and collecting the water used for cooling the template, reducing the waste of water resources and the probability of water vapor having an adverse effect on the working environment.

[0018] Optionally, the frame is provided with a water return assembly for reusing the water received in the water tank, and the water return assembly includes:

[0019] A heat sink, the heat sink is arranged on the water receiving tank, the heat sink is arranged in an inclined state, a plurality of heat sinks are provided, and the plurality of heat sinks are vertically staggered and distributed on two opposite inner side walls of the water receiving tank;

[0020] A water return pipe, one end of which is connected to the bottom of the water receiving tank and communicates with the inside of the water receiving tank, and the other end of which is connected to the cooling pipe and communicates with the inside of the cooling pipe;

[0021] A return water pump is arranged on the return water pipe and is used to process the water in the water receiving tank and pump it into the return water pipe.

[0022] By adopting the above technical solution, multiple heat sinks are installed on the water receiving tank, and the hot water derived from the template falls onto the heat sink. The heat sink increases the heat dissipation area of ​​the water body, thereby accelerating the cooling of the water body. After being cooled by the multiple heat sinks, the hot water is collected at the bottom of the water receiving tank. The return water pump is started to pump the cooled water in the water receiving tank into the return water pipe, and the return water pipe then guides the water back to the cooling pipe for reuse, thereby realizing the reuse of the water in the water receiving tank and reducing the waste of water resources.

[0023] Optionally, the tube body of the cooling pipe is made of a retractable corrugated tube, and a first half ring and a second half ring are rotatably arranged on the frame, and the first half ring and the second half ring cooperate to clamp and fix the cooling pipe, and a fixing component is arranged on the first half ring and the second half ring, and the fixing component is used to fix the relative position between the first half ring and the second half ring when the first half ring and the second half ring clamp the cooling pipe.

[0024] By adopting the above technical solution, when the cooling pipe is connected to the water injection hole on the template, the first half ring and the second half ring cooperate to clamp the cooling pipe, thereby fixing the position of the cooling pipe. When it is necessary to use the water in the cooling pipe to flush other places, unlock the fixing component, open the first half ring and the second half ring, and freely stretch or move the cooling pipe to perform other tasks, thereby expanding the use range of the cooling pipe.

[0025] Optionally, the fixing component includes:

[0026] A first fixing plate and a second fixing plate, wherein the first fixing plate and the second fixing plate are respectively arranged on the first half ring and the second half ring;

[0027] A fixing bolt, wherein the fixing bolt passes through the first fixing plate and the second fixing plate and the head of the fixing bolt is pressed against the second fixing plate;

[0028] A fixing nut is threadedly connected to the fixing bolt and pressed against the first fixing plate.

[0029] By adopting the above technical solution, the fixing nut is twisted to disengage the fixing bolt, and then the fixing bolt is pulled out from the first fixing plate and the second fixing plate, and the first half ring and the second half ring are turned away, so that the cooling pipe can be freely moved. When the cooling pipe needs to be fixedly connected to the template, the first half ring and the second half ring are rotated so that the first half ring and the second half ring clamp the cooling pipe, and then the fixing bolt is moved to pass through the first fixing plate and the second fixing plate, and then the fixing nut is twisted to tighten it to the first fixing plate, thereby achieving the fixing of the rotation position of the first half ring and the second half ring.

[0030] Optionally, a connection component is provided on the template, and the water outlet end of the cooling pipe is connected to the water injection hole of the template through the connection component, and the connection component includes:

[0031] a first connecting ring, the first connecting ring being arranged on the template;

[0032] a second connecting ring, wherein the second connecting ring is arranged on the cooling pipe, and a diameter of the first connecting ring is greater than a diameter of the second connecting ring;

[0033] A connecting block, wherein a sliding groove is radially provided on the inner side wall of the first connecting ring, and the connecting block is slidably arranged on the sliding groove;

[0034] A connecting spring, the connecting spring is arranged on the inner bottom wall of the sliding groove and connected to the connecting block, a connecting groove is radially opened on the outer side wall of the second connecting ring, and the head of the connecting block passes through the sliding groove under the action of the connecting spring and is plugged into the connecting groove;

[0035] A pull rod is slidably arranged on the first connecting ring, one end of the pull rod is located outside the first connecting ring, and the other end of the pull rod extends into the sliding groove and is connected to the connecting block.

[0036] By adopting the above technical solution, when the cooling pipe needs to be connected to the template, the pull rod is pulled to drive the connecting block to move into the sliding groove, the cooling pipe is moved so that the second connecting ring in the cooling pipe extends into the first connecting ring, and the pull rod is released. Under the action of the connecting spring, the head of the connecting block passes through the sliding groove and is plugged into the connecting groove to complete the connection and fixation between the cooling pipe and the template. When the cooling pipe needs to be removed, only the pull rod needs to be pulled to disengage the connecting block from the second connecting ring, and the second connecting ring can be pulled out from the first connecting ring. The overall structure is simple and convenient, and the working efficiency is high.

[0037] Optionally, an arc-shaped guide surface is provided on one end of the connecting block extending out of the sliding groove.

[0038] By adopting the above technical solution, an arc-shaped guide surface is provided on one end of the connecting block extending out of the sliding groove, so that when the second connecting ring is inserted into the first connecting ring, the second connecting ring contacts the guide surface of the connecting block, and the guide surface generates a component force driving the connecting block to move into the sliding groove, so that when the cooling pipe and the template are plugged in, there is no need to pull the pull rod, and they can be directly plugged in, which is convenient and quick, thereby improving work efficiency.

[0039] In summary, the present application includes at least one of the following beneficial technical effects:

[0040] 1. Pour cold water into the template through the cooling pipe to quickly cool the template and reduce the time for model cooling and molding, greatly improving production efficiency. At the same time, the template is blown by the blower, which speeds up the cooling time of the template on the one hand, and blows away the hot steam generated by the evaporation of the cold water after heating on the other hand, so that the ambient air around the template can circulate and ensure the heat dissipation effect of the template itself; the water receiving component receives the remaining water after cooling, reducing the probability of water spilling in the working environment and causing pollution to the working environment;

[0041] 2. By installing multiple heat sinks on the water receiving tank, the hot water derived from the template falls onto the heat sinks, which increases the heat dissipation area of ​​the water body, thereby accelerating the cooling of the water body. After being cooled by multiple heat sinks, the hot water is collected at the bottom of the water receiving tank. The return water pump is started to pump the cooled water in the water receiving tank into the return water pipe, and the return water pipe then guides the water back to the cooling pipe for reuse, thereby realizing the reuse of the water in the water receiving tank and reducing the waste of water resources;

[0042] 3. By providing an arc-shaped guide surface on one end of the connecting block extending out of the sliding groove, when the second connecting ring is inserted into the first connecting ring, the second connecting ring contacts the guide surface of the connecting block, and the guide surface generates a component force to drive the connecting block to move into the sliding groove. Therefore, when the cooling pipe and the template are plugged in, there is no need to pull the pull rod, and they can be directly plugged in, which is convenient and quick, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a three-dimensional structural schematic diagram of the present application;

[0044] Figure 2 It is a schematic diagram of the structure of the cooling mechanism, the fixing assembly and the water return assembly in the present application, wherein the template side wall, the water receiving trough side wall, the first connecting ring side wall and the second connecting ring side wall are cut away;

[0045] Figure 3 yes Figure 2 Enlarged schematic diagram of part A in the middle.

[0046] Figure numerals: 1. frame; 11. template; 12. injection device; 13. first half ring; 14. second half ring; 15. water flow channel; 16. water injection hole; 17. water outlet hole; 2. cooling mechanism; 21. cooling pipe; 22. blower; 23. water receiving assembly; 24. water receiving trough; 25. condensation plate; 3. fixing assembly; 31. first fixing plate; 32. second fixing plate; 33. fixing bolt; 4. connecting assembly; 41. first connecting ring; 42. second connecting ring; 43. connecting block; 44. connecting spring; 45. pull rod; 46. sliding groove; 47. guide surface; 5. return water assembly; 51. heat sink; 52. return water pipe; 53. return water pump. DETAILED DESCRIPTION

[0047] The following is combined with Figure 1 -Attached Figure 3 This application is described in further detail.

[0048] The embodiment of the present application discloses an injection molding machine for producing high impact-resistant and deformation-resistant PET cosmetic bottles.

[0049] Reference Figure 1 The injection molding machine for producing high impact-resistant and deformation-resistant PET cosmetic bottles includes a frame 1, on which a template 11 and an injection device 12 for injecting PET plastic into the template 11 are horizontally slidably installed, and a cooling mechanism 2 is arranged on the frame for cooling the template 11.

[0050] Reference Figure 1 and Figure 2 The cooling mechanism 2 includes a cooling pipe 21, a blower 22 and a water receiving assembly 23. The body of the cooling pipe 21 is made of a retractable corrugated pipe. One end of the cooling pipe 21 is connected to a water source, and the other end of the cooling pipe 21 is used to pour water on the template 11. The first half ring 13 and the second half ring 14 are rotatably mounted on the frame 1. The first half ring 13 and the second half ring 14 are provided with a fixing assembly 3. The first half ring 13 and the second half ring 14 clamp and fix the cooling pipe 21 under the action of the fixing assembly 3.

[0051] Reference Figure 1 and Figure 2 The fixing assembly 3 includes a first fixing plate 31, a second fixing plate 32, a fixing bolt 33 and a fixing nut. The first fixing plate 31 and the second fixing plate 32 are fixedly connected to the ends of the first half ring 13 and the second half ring 14, respectively. The fixing bolt 33 passes through the first fixing plate 31 and the second fixing plate 32 horizontally, and the head of the fixing bolt 33 is pressed against the second fixing plate 32, and the fixing nut is threadedly connected to the fixing bolt 33 and pressed against the first fixing plate 31.

[0052] Reference Figure 1 and Figure 2When the cooling pipe 21 is needed to water the template 11, the first half ring 13 and the second half ring 14 are rotated to clamp the cooling pipe 21, and then the fixing bolt 33 is moved to pass through the first fixing plate 31 and the second fixing plate 32, and then the fixing nut is tightened against the first fixing plate 31 to fix the position of the cooling pipe 21. When the water in the cooling pipe 21 is needed to flush other places, the fixing nut is screwed to disengage the fixing bolt 33, and then the fixing bolt 33 is pulled out from the first fixing plate 31 and the second fixing plate 32, and the first half ring 13 and the second half ring 14 are turned away, and the cooling pipe 21 can be freely stretched or moved to perform other work.

[0053] Reference Figure 1 and Figure 2 A water channel 15 is provided inside the template 11, and a water injection hole 16 and a water outlet hole 17 are provided on the upper and lower surfaces of the template 11, respectively, which are connected to the water channel 15. A blower 22 is fixedly connected to the frame 1 and is located on one side of the template 11, and the blower 22 blows air to the template 11. A connecting component 4 is provided on the upper surface of the template 11, and the outlet pipe end of the cooling pipe 21 is connected to the water injection hole 16 of the template 11 through the connecting component 4.

[0054] Reference Figure 2 and Figure 3 The connecting assembly 4 includes a first connecting ring 41, a second connecting ring 42, a connecting block 43, a connecting spring 44 and a pull rod 45. The first connecting ring 41 is fixedly connected to the upper surface of the template 11. The second connecting ring 42 is fixedly connected to the tube end of the cooling tube 21. The diameter of the first connecting ring 41 is larger than the diameter of the second connecting ring 42. A sliding groove 46 is radially provided on the inner side wall of the first connecting ring 41, and the connecting block 43 is slidably installed on the sliding groove 46. The connecting spring 44 is fixedly connected to the inner bottom wall of the sliding groove 46 and connected to the connecting block 43. A connecting groove is radially provided on the outer side wall of the second connecting ring 42, and the head of the connecting block 43 passes through the sliding groove 46 under the action of the connecting spring 44 and is plugged into the connecting groove. An arc-shaped guide surface 47 is provided on the end surface of the connecting block 43 that is plugged into the connecting groove. The pull rod 45 is horizontally slidably installed on the first connecting ring 41 , one end of the pull rod 45 is located outside the first connecting ring 41 , and the other end of the pull rod 45 extends into the sliding groove 46 and is fixedly connected to the connecting block 43 .

[0055] Reference Figure 2 and Figure 3When the cooling tube 21 needs to be connected to the template 11, the pull rod 45 is pulled to drive the connecting block 43 to move into the sliding groove 46, and the cooling tube 21 is moved so that the second connecting ring 42 in the cooling tube 21 extends into the first connecting ring 41. The pull rod 45 is released, and the head of the connecting block 43 passes through the sliding groove 46 under the action of the connecting spring 44 and is plugged into the connecting groove, thereby completing the connection and fixing work between the cooling tube 21 and the template 11. When the cooling tube 21 needs to be removed, only the pull rod 45 needs to be pulled to disengage the connecting block 43 from the second connecting ring 42, and the second connecting ring 42 can be pulled out from the first connecting ring 41. The overall structure is simple and convenient, and the working efficiency is high.

[0056] Reference Figure 1 and Figure 2 The water receiving assembly 23 is arranged on the frame 1 and is used to receive the water flowing down from the template 11. The water receiving assembly 23 includes a water receiving trough 24 and a condensation plate 25. The water receiving trough 24 is fixedly connected to the frame 1 located below the template 11, and the upper opening of the water receiving trough 24 is in an open state. The condensation plate 25 is fixedly connected to the outer wall of the water receiving trough 24 and is located on the side of the template 11 away from the blower 22. The water receiving trough 24 receives the water flowing out of the water outlet 17 of the template 11 below the template 11. After receiving the hot steam blown by the blower 22, the condensation plate 25 condenses part of the moisture in the hot steam and then flows into the water receiving trough 24, thereby fully receiving and collecting the water used for cooling the template 11, reducing the waste of water resources and the probability of water vapor adversely affecting the working environment.

[0057] Reference Figure 1 and Figure 2 The frame 1 is provided with a water return assembly 5 for recycling the water received in the water tank 24, and the water return assembly 5 includes a heat sink 51, a water return pipe 52 and a water return pump 53. There are multiple heat sinks 51, and the multiple heat sinks 51 are vertically staggered and fixedly connected to the two opposite inner walls of the water tank 24. The heat sink 51 is arranged in an inclined state. One end of the water return pipe 52 is connected to the bottom of the water tank 24 and communicates with the inside of the water tank 24, and the other end of the water return pipe 52 is connected to the cooling pipe 21 and communicates with the inside of the cooling pipe 21. The water return pump 53 is fixedly connected to the water return pipe 52, and the water return pump 53 is used to pump the water in the water tank 24 into the water return pipe 52.

[0058] Reference Figure 1 and Figure 2The hot water derived from the template 11 falls onto the heat sink 51, which increases the heat dissipation area of ​​the water body, thereby accelerating the cooling of the water body. After being cooled by multiple heat sinks 51, the hot water is collected at the bottom of the water receiving tank 24. The return water pump 53 is started to pump the cooled water in the water receiving tank 24 into the return water pipe 52, and the return water pipe 52 then guides the water back to the cooling pipe 21 for reuse, thereby realizing the reuse of the water in the water receiving tank 24 and reducing the waste of water resources.

[0059] The working principle of the embodiment of the present application is as follows:

[0060] After the injection device 12 performs injection molding on the template 11, the cooling pipe 21 passes water to pour cold water onto the template 11, thereby quickly cooling the template 11 and reducing the time for cooling and molding the model, greatly improving production efficiency. At the same time, the blower 22 is used to blow air to the template 11, which, on the one hand, speeds up the cooling time of the template 11, and on the other hand, blows away the hot steam generated by the evaporation of the cold water when it is heated, so that the ambient air around the template 11 circulates, ensuring the heat dissipation effect of the template 11 itself.

[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An injection molding machine for producing high impact-resistant and anti-deformation PET cosmetic bottles, characterized in that: The invention comprises a frame (1), a template (11) being horizontally slidably arranged on the frame (1), an injection device (12) being arranged on the frame (1), the injection device (12) being used to inject PET plastic into the template (11), a cooling mechanism (2) being arranged on the frame (1), the cooling mechanism (2) being used to cool the template (11), the cooling mechanism (2) comprising: a cooling pipe (21), the cooling pipe (21) being arranged on the frame (1) and being connected to a water source, the cooling pipe (21) being used to pour cold water onto the template (11); a blower (22), the blower (22) being arranged on the frame (1) and used to blow air to the template (11); A water receiving assembly (23), wherein the water receiving assembly (23) is arranged on the frame (1) and is used to receive water flowing down from the template (11).

2. The injection molding machine for producing high impact-resistant and anti-deformation PET cosmetic bottles according to claim 1, characterized in that: A water flow channel (15) is provided inside the template (11), and a water injection hole (16) and a water outlet hole (17) which are in communication with the water flow channel (15) are provided on the template (11).

3. The injection molding machine for producing high impact-resistant and anti-deformation PET cosmetic bottles according to claim 2, characterized in that: The water receiving assembly (23) comprises: A water receiving trough (24), the water receiving trough (24) being arranged on the frame (1) and located below the water outlet hole (17) of the template (11); A condensation plate (25), wherein the condensation plate (25) is arranged on the water receiving trough (24), and the condensation plate (25) is located on a side of the template (11) away from the blower (22).

4. The injection molding machine for producing high impact-resistant and anti-deformation PET cosmetic bottles according to claim 3, characterized in that: The frame (1) is provided with a water return assembly (5) for reusing the water received in the water tank (24), and the water return assembly (5) comprises: A heat sink (51), the heat sink (51) being arranged on the water receiving trough (24), the heat sink (51) being arranged in an inclined state, a plurality of heat sinks (51) being arranged, and the plurality of heat sinks (51) being vertically staggered and distributed on two opposite inner side walls of the water receiving trough (24); a water return pipe (52), one end of the water return pipe (52) being connected to the bottom of the water receiving tank (24) and communicating with the interior of the water receiving tank (24), and the other end of the water return pipe (52) being connected to the cooling pipe (21) and communicating with the interior of the cooling pipe (21); A water return pump (53), the water return pump (53) being arranged on the water return pipe (52), the water return pump (53) being used to pump water in the water receiving tank (24) into the water return pipe (52).

5. The injection molding machine for producing high impact-resistant and anti-deformation PET cosmetic bottles according to claim 1, characterized in that: The tube body of the cooling tube (21) is made of a telescopic corrugated tube. A first half ring (13) and a second half ring (14) are rotatably arranged on the frame (1). The first half ring (13) and the second half ring (14) cooperate to clamp and fix the cooling tube (21). The first half ring (13) and the second half ring (14) are provided with a fixing assembly (3). The fixing assembly (3) is used to fix the relative position between the first half ring (13) and the second half ring (14) when the first half ring (13) and the second half ring (14) clamp the cooling tube (21).

6. The injection molding machine for producing high impact-resistant and anti-deformation PET cosmetic bottles according to claim 5, characterized in that: The fixing component (3) comprises: A first fixing plate (31) and a second fixing plate (32), wherein the first fixing plate (31) and the second fixing plate (32) are respectively arranged on the first half ring (13) and the second half ring (14); A fixing bolt (33), wherein the fixing bolt (33) passes through the first fixing plate (31) and the second fixing plate (32) and the head of the fixing bolt (33) is tightly pressed against the second fixing plate (32); A fixing nut is threadedly connected to the fixing bolt and pressed against the first fixing plate.

7. The injection molding machine for producing high impact-resistant and anti-deformation PET cosmetic bottles according to claim 6, characterized in that: The template (11) is provided with a connection assembly (4), and the water outlet end of the cooling pipe (21) is connected to the water injection hole (16) of the template (11) through the connection assembly (4), and the connection assembly (4) comprises: A first connecting ring (41), wherein the first connecting ring (41) is arranged on the template (11); a second connecting ring (42), the second connecting ring (42) being arranged on the cooling pipe (21), the diameter of the first connecting ring (41) being greater than the diameter of the second connecting ring (42); A connecting block (43), wherein a sliding groove (46) is radially provided on the inner side wall of the first connecting ring (41), and the connecting block (43) is slidably disposed on the sliding groove (46); A connecting spring (44), the connecting spring (44) being arranged on the inner bottom wall of the sliding groove (46) and connected to the connecting block (43); a connecting groove being radially opened on the outer side wall of the second connecting ring (42); and a head of the connecting block (43) passing through the sliding groove (46) and plugging into the connecting groove under the action of the connecting spring (44); A pull rod (45), wherein the pull rod (45) is slidably disposed on the first connecting ring (41), one end of the pull rod (45) is located outside the first connecting ring (41), and the other end of the pull rod (45) extends into the sliding groove (46) to be connected to the connecting block (43).

8. The injection molding machine for producing high impact-resistant and anti-deformation PET cosmetic bottles according to claim 7, characterized in that: An arc-shaped guide surface (47) is provided on one end of the connection block (43) extending out of the sliding groove (46).

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