A bottle bottom can pop out the slider type demoulding structure

Abstract

The present application relates to the field of blow molding demoulding technology, and in particular to a bottle bottom pop-up slider demoulding structure, which includes a bottle body mold, which is a split structure and is used for blow molding of products; a back plate, which is fixed on the side of the bottle body mold away from the product; a bottle bottom mold, which is a split structure and is provided with a slideway and a through hole, and the bottle body mold is provided with a guide column and a positioning hole, the guide column is slidably connected to the slideway, and the through hole is connected to the positioning hole by a positioning pin for positioning; a limit block, which is arranged on both sides of the slideway to limit the sliding range of the guide column; a spring, which is installed between the bottle bottom mold and the back plate to push the bottle bottom mold away from the back plate. The present application has the effect of alleviating the problem that the product demoulding of the related fixed bottle bottom mold is inconvenient and easy to be damaged.

Description

Technical Field

[0001] The present application relates to the field of blow molding demoulding technology, and in particular to a bottle bottom ejectable slider type demoulding structure. Background Art

[0002] In the blow molding process, the design and manufacture of the mold directly affect the quality and production efficiency of the product. Blow molding is a method of heating and softening thermoplastics and then blowing them into shape through a mold. It is widely used in the production of various hollow products such as plastic bottles and cans. The mold is usually composed of two separate molds. During the mold opening process, the staff needs to cooperate accurately to ensure that the product can be demolded smoothly. Reasonable mold design can not only improve the appearance quality of the product, but also improve production efficiency and reduce production costs.

[0003] However, when the mold is opened, the product often cannot be demoulded normally, and problems such as mold sticking, deformation, and scratches occur. That is, the product adheres to the mold surface, causing damage to the product surface during demoulding, or the product surface is scratched by the mold, leaving irregular patterns. These problems not only affect the appearance quality of the product, but may also lead to product scrapping and increase production costs.

[0004] Therefore, the related fixed bottle bottom mold has the problem that the product is inconvenient to demould and easy to be damaged. Utility Model Content

[0005] In order to alleviate the problem that the related fixed bottle bottom molds are inconvenient to demould and easy to damage the products, the present application provides a bottle bottom pop-up slider type demoulding structure.

[0006] The present application provides a bottle bottom pop-up slider demoulding structure adopts the following technical solution:

[0007] A bottle bottom ejectable slider type demoulding structure, comprising:

[0008] A bottle body mold, which is a split structure and is used for blow molding of the product;

[0009] A back plate, the back plate being fixed to a side of the bottle body mold facing away from the product;

[0010] The bottle bottom mold is a split structure and is provided with a slideway and a through hole, while the bottle body mold is provided with a guide column and a positioning hole, the guide column is slidably connected to the slideway, and the through hole is connected to the positioning hole by a positioning pin for positioning;

[0011] Limit blocks, which are arranged on both sides of the slideway to limit the sliding range of the guide column;

[0012] A spring is installed between the bottle bottom mold and the back plate to push the bottle bottom mold away from the back plate.

[0013] By adopting the above technical solution, the separate design of the bottle bottom mold and the bottle body mold enables the two to operate independently during the demolding process. A spring push mechanism is introduced in the bottle bottom mold. Under the action of the spring, the bottle bottom mold can be pushed outward to separate it from the bottle body mold, and then the product can be removed from the bottle bottom mold upward, solving the problems of mold sticking, deformation and laceration in the traditional demolding structure, thereby achieving efficient and smooth demolding operation. In addition, the setting of the limit block accurately limits the sliding range of the guide column, preventing excessive sliding or dislocation, and further ensuring the accuracy and stability of demolding. The back plate provides a stable support for the bottle body mold, making the entire demolding process more reliable and efficient.

[0014] Optionally, a lubrication device is provided at the joint between the slideway and the guide column between the bottle bottom mold and the bottle body mold.

[0015] By adopting the above technical solution, the setting of the lubrication device effectively reduces the friction of the slide and guide pillars during the sliding process, so that the mold can be smoother and more stable during the demolding operation. Reducing friction can not only reduce energy consumption and improve demolding efficiency, but also significantly extend the service life of the slide and guide pillars, and reduce wear and damage caused by friction. Secondly, the lubrication device can prevent jamming during the sliding process and improve the operating accuracy and reliability of the mold. The smoothness of the sliding process is crucial to ensuring the quality of the product. The application of the lubrication device effectively avoids surface defects and structural damage to the product caused by jamming.

[0016] Optionally, the inner surface of the slideway is provided with a hardened coating.

[0017] By adopting the above technical solution, the application of hardened coating greatly improves the hardness and wear resistance of the slide surface, thereby effectively reducing the wear during the sliding process. It not only extends the service life of the slide and reduces the maintenance and replacement costs, but also ensures the stability and reliability of the mold in long-term use. Secondly, the hardened coating provides a smoother sliding surface, reduces the friction resistance between the guide column and the slide, and makes the demoulding operation smoother and more stable. This friction reduction effect not only improves the demoulding efficiency, but also reduces the heat generated by friction during the operation, thereby avoiding mold deformation and product quality problems caused by heat accumulation. In addition, the hardened coating also has a protective effect, which can resist corrosion and chemical erosion and protect the slide surface from the influence of the external environment.

[0018] Optionally, a dust cover is provided on the side of the slideway of the bottle bottom mold.

[0019] By adopting the above technical solution, the setting of the dust cover effectively prevents dust, particles and other impurities from entering the slideway, ensuring that the sliding surface between the slideway and the guide pillar remains clean. It not only reduces the wear and friction caused by impurities and extends the service life of the mold, but also ensures the smoothness and stability of the sliding process, avoiding jamming and poor operation caused by impurities. Secondly, the application of the dust cover also has a certain protective effect, preventing the slideway and guide pillar from being exposed to the external environment and being corroded or physically damaged by chemicals. By providing an additional layer of protection, the dust cover ensures that the mold can still maintain its function and performance under various complex working conditions.

[0020] Optionally, a buffer pad is provided in the slideway of the bottle bottom mold near the limiting block.

[0021] By adopting the above technical solution, the buffer pad is set to form a buffer zone between the slide and the limit block, which effectively absorbs and reduces the impact force generated when the guide column collides with the limit block during the sliding process. It not only protects the slide and the limit block, avoiding wear and damage caused by frequent collisions, but also extends the service life of the mold and reduces maintenance and replacement costs. Secondly, the buffer pad can provide a certain shock absorption effect, ensuring that the sliding process is more stable and smooth, and avoiding sliding instability and product quality problems caused by severe vibration. By reducing the impact force, the buffer pad helps to maintain the matching accuracy of the guide column and the slide, and further improves the accuracy and reliability of the demolding operation. In addition, the use of the buffer pad can effectively reduce the noise generated during the sliding process, improve the working environment, and enhance the comfort and safety of the operation.

[0022] Optionally, the positioning pin is fixedly connected to an operating rod, and the operating rod extends to the outside of the bottle bottom mold to control the locking and loosening of the positioning pin.

[0023] By adopting the above technical solution, the locking and loosening of the locating pin is controlled by the operating rod, and the connection state of the bottle bottom mold and the bottle body mold is accurately adjusted, so that the operator can easily operate outside the mold, and the locking and loosening actions can be completed without disassembling the mold, which improves the convenience and efficiency of the operation. Secondly, the setting of the operating rod greatly improves the safety and reliability of the operation. The operator does not need to directly contact the inside of the mold, reducing the risk of operating in high temperature or dangerous environments. At the same time, the operating rod provides a longer force arm, allowing the operator to control the locating pin with less force, reducing physical exertion during the operation. In addition, the fixed connection between the locating pin and the operating rod ensures the stability and accuracy of the locating pin during the locking and loosening process, avoiding inaccurate positioning or loosening problems caused by improper operation.

[0024] Optionally, the bottle bottom mold and the back plate are both provided with spring receiving grooves.

[0025] By adopting the above technical solution, the setting of the spring placement groove provides a stable and precise installation position for the spring, ensuring that the spring will not be displaced or fall off during the working process, improving the working stability and reliability of the spring, thereby ensuring the smooth movement and consistency of the bottle bottom mold during the demolding process. Secondly, the spring placement groove can effectively disperse the pressure on the spring, making the force on the spring more uniform, and avoiding deformation or damage of the spring caused by local stress concentration. This not only extends the service life of the spring, reduces maintenance and replacement costs, but also maintains the continuity and efficiency of the demolding process.

[0026] Optionally, sawtooth grooves are provided at the joints between the bottle bottom molds, and the grooves cooperate with each other.

[0027] By adopting the above technical solution, the design of the serrated groove increases the contact area between the bottle bottom molds, making the combination more compact and stable. This structure can effectively prevent the mold from being misaligned or loosened during use, ensuring that the mold can remain stable and consistent under high pressure and high temperature environments. Secondly, the mutual coordination design of the serrated grooves enhances the shear and torsion resistance of the mold joint, and improves the overall mechanical strength and durability of the mold. This not only extends the service life of the mold, reduces the need for frequent maintenance and replacement, but also maintains the precision and consistency of product molding. In addition, the structural design of the serrated grooves can effectively prevent external contaminants such as dust and impurities from entering the mold joint, reducing wear and damage caused by contaminants.

[0028] Optionally, edges of the bottle body mold and the bottle bottom mold are rounded.

[0029] By adopting the above technical solutions, the rounded corners can effectively reduce the sharpness of the mold edge, reduce the risk of injury to operators during the installation, removal and maintenance of the mold, and improve the safety of operation. At the same time, the rounded edges are smoother, which reduces the friction and wear of the mold during operation, thereby extending the service life of the mold and reducing the frequency and cost of maintenance and replacement. Secondly, the rounded corner design can improve the stress distribution of the mold. Compared with sharp right-angled edges, rounded corners can disperse stress more evenly and reduce stress concentration, thereby improving the compression resistance and structural stability of the mold during high-pressure forming. This not only improves the durability of the mold, but also ensures the precision and quality of the product molding.

[0030] Optionally, the back plate is provided with a support seat.

[0031] By adopting the above technical solution, the setting of the support seat provides additional stability and support for the back plate, ensuring that the back plate can bear the weight of the mold and the product during operation, preventing the back plate from deforming or shifting due to uneven force, greatly improving the overall stability and durability of the mold, and ensuring a smooth and reliable demolding process. Secondly, the support seat can effectively disperse the pressure on the back plate, making the force on the back plate more uniform, avoiding structural fatigue and damage caused by local stress concentration. This not only extends the service life of the back plate and mold, reduces the need for frequent maintenance and replacement, but also maintains the continuity and efficiency of the production process.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. By introducing a spring push mechanism in the bottle bottom mold, the bottle bottom mold is separated from the bottle body mold, and then the product is removed from the bottle bottom mold upwards, thus avoiding problems such as mold sticking, deformation and lace in the traditional demoulding process;

[0034] 2. By setting a lubrication device at the matching position of the slideway and guide column between the bottle bottom mold and the bottle body mold, the friction is reduced, the demoulding smoothness is improved and the service life of the mold is extended;

[0035] 3. By arranging a buffer pad near the limit block in the slideway of the bottle bottom mold, the effects of absorbing impact force, reducing vibration during sliding and protecting the mold structure are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is an overall schematic diagram of a bottle bottom pop-up slider-type demoulding structure in an embodiment of the present application.

[0037] Figure 2 It is a side schematic diagram of a bottle bottom pop-up slider-type demoulding structure in a pop-up state in an embodiment of the present application (excluding the dust cover).

[0038] Figure 3 It is a bottom schematic diagram of a bottle bottom pop-up slider-type demoulding structure in a pop-up state in an embodiment of the present application.

[0039] Figure 4 It is a side schematic diagram of a bottle bottom pop-up slider-type demoulding structure in a pressed state in an embodiment of the present application (excluding the dust cover).

[0040] Figure 5 It is a bottom schematic diagram of a bottle bottom pop-up slider-type demoulding structure in a pressed state in an embodiment of the present application.

[0041] Description of reference numerals:

[0042] 1. Bottle body mold; 11. Guide column; 12. Positioning hole; 2. Back plate; 21. Support seat; 3. Bottle bottom mold; 31. Slide; 32. Through hole; 33. Dust cover; 34. Buffer pad; 35. Spring placement groove; 36. Groove; 4. Positioning pin; 41. Operating lever; 5. Limit block; 6. Spring; 7. Lubricating device; 8. Finished product. DETAILED DESCRIPTION

[0043] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0044] The embodiment of the present application discloses a bottle bottom ejectable slider-type demoulding structure.

[0045] Reference Figure 1 and Figure 2 A bottle bottom pop-up slider demoulding structure comprises a bottle body mold 1, a bottle bottom mold 3 and a back plate 2. The bottle body mold 1 and the bottle bottom mold 3 are both split structures, divided into left and right parts, which are convenient for processing the product 8. The bottle body mold 1 and the bottle bottom mold 3 are stacked and slidably connected through a slide 31 and a guide column 11, wherein the slide 31 is arranged on the bottle bottom mold 3, and the guide column 11 is arranged on the bottle body mold 1. The back plate 2 is arranged on the side of the bottle body mold 1 away from the product 8, and is fixedly connected to the bottle body mold 1, and the back plate 2 and the bottle bottom mold 3 are connected through a spring 6.

[0046] refer to Figure 3 and Figure 4 The bottle body mold 1 and the bottle bottom mold 3 can operate independently during the demolding process, and the two will not interfere with each other during the demolding process. The setting of the back plate 2 provides a stable fixing point for the bottle body mold 1 to ensure that the bottle body mold 1 will not move during the operation. In particular, a spring 6 pushing mechanism is introduced in the bottle bottom mold 3. The spring 6 is installed between the back plate 2 and the bottle bottom mold 3. The spring 6 pushes the bottle bottom mold 3 outward through the elastic force applied to separate it from the bottle body mold 1, and then removes the product 8 from the bottle bottom mold 3 upward, effectively solving the problems of mold sticking, deformation and lace in the traditional demolding structure, thereby realizing efficient and smooth demolding operation.

[0047] In order to ensure a smooth sliding process, a lubrication device 7 is provided at the joint of the slide 31 and the guide column 11 between the bottle bottom mold 3 and the bottle body mold 1. The lubrication device 7 not only reduces the friction during the sliding process, making the demoulding operation smoother, but also significantly extends the service life of the slide 31 and the guide column 11. The lubrication device 7 usually includes lubricating oil or grease, and is provided with lubrication channels, through which the lubricant is evenly distributed on the sliding surface to ensure the best lubrication effect. The inner surface of the slide 31 is provided with a hardened coating, which significantly improves the hardness and wear resistance of the surface of the slide 31, thereby effectively reducing wear. The hardened coating not only extends the service life of the slide 31 and reduces the maintenance and replacement costs, but also ensures the stability and reliability of the mold in long-term use. It also provides a smoother sliding surface, further reduces frictional resistance, and prevents mold deformation and product 8 quality problems caused by heat generated by friction.

[0048] Limit blocks 5 are provided on both sides of the slideway 31, which accurately limit the sliding range of the guide pillar 11, prevent excessive sliding or misalignment, and further ensure the accuracy and stability of demoulding. The limit blocks 5 are usually made of wear-resistant materials and fixed to both sides of the slideway 31 by screws or pins. The position of the limit blocks 5 is accurately calculated and designed to ensure that they can effectively control the maximum sliding distance of the guide pillar 11 without affecting the overall demoulding efficiency and effect.

[0049] In order to prevent the influence of the external environment, a dust cover 33 is provided on the side of the slide 31. The dust cover 33 effectively prevents dust, particles and other impurities from entering the slide 31, ensures that the sliding surface between the slide 31 and the guide column 11 remains clean, reduces the wear and friction caused by impurities, extends the service life of the mold, and ensures smooth and stable sliding. The dust cover 33 is usually made of durable plastic or metal material and is fixed to the side of the slide 31 by buckles or screws. The dust cover 33 also provides an additional protective layer to protect the slide 31 and the guide column 11 from chemical erosion or physical damage in the external environment.

[0050] A buffer pad 34 is provided near the limit block 5 in the slide 31. The buffer pad 34 can effectively absorb and mitigate the impact force generated when the guide column 11 collides with the limit block 5 during the sliding process, protect the slide 31 and the limit block 5, and avoid wear and damage caused by frequent collisions. The buffer pad 34 is usually made of an elastic material, such as rubber or polyurethane, to ensure that it can effectively alleviate the transmission of force when it is impacted. The buffer pad 34 can also provide a shock-absorbing effect, ensure that the sliding process is more stable and smooth, and further improve the accuracy and reliability of the demolding operation. In addition, the use of the buffer pad 34 can effectively reduce the noise generated during the sliding process, improve the working environment, and enhance the comfort and safety of the operation.

[0051] refer to Figure 3 and Figure 5 , the locating pin 4 is fixedly connected to the operating rod 41, and the operating rod 41 extends to the outside of the bottle bottom mold 3. The locking and loosening of the locating pin 4 is controlled by the operating rod 41, so that the precise adjustment of the connection state between the bottle bottom mold 3 and the bottle body mold 1 is achieved. The design of the operating rod 41 improves the convenience and safety of operation and reduces the risk of operation in high temperature or dangerous environments. The operating rod 41 is usually made of a solid metal material and is connected to the locating pin 4 by threads or welding. A handle or lever can be provided at the outer end of the operating rod 41 to facilitate control by the operator. The design of the operating rod 41 ensures the stability and accuracy of the locating pin 4 during the locking and loosening process, and avoids the problem of inaccurate positioning or loosening due to improper operation.

[0052] In order to fix the spring 6, both the bottle bottom mold 3 and the back plate 2 are provided with a spring placement groove 35. The spring placement groove 35 provides a stable and precise installation position for the spring 6, ensuring that the spring 6 will not be displaced or fall off during operation, improving the working stability and reliability of the spring 6, and ensuring the smooth movement and consistency of the bottle bottom mold 3 during the demoulding process. The spring placement groove 35 is usually designed as a groove 36 or a hole, which accurately matches the shape and size of the spring 6 to ensure that the spring 6 is firmly fixed in its position. The spring placement groove 35 effectively disperses the pressure on the spring 6, making the force on the spring 6 more uniform, avoiding deformation or damage of the spring 6 caused by local stress concentration, extending the service life of the spring 6, reducing maintenance and replacement costs, and maintaining the continuity and efficiency of the demoulding process.

[0053] In order to further enhance the bonding strength of the mold, a serrated groove 36 is provided at the joint between the bottle bottom mold 3, and the grooves 36 cooperate with each other. The serrated groove 36 design increases the contact area, makes the mold combination more tight and stable, prevents dislocation or looseness during use, and ensures the stability and consistency of the mold under high pressure and high temperature environment. The serrated groove 36 is usually designed as a staggered sawtooth shape, which forms a strong bond by biting each other. The design of the serrated groove 36 enhances the shear resistance and torsion resistance of the mold joint, improves the overall mechanical strength and durability of the mold, extends the service life of the mold, reduces the need for frequent maintenance and replacement, and maintains the precision and consistency of the molding of the product 8. In addition, the structural design of the serrated groove 36 can also effectively prevent external pollutants such as dust and impurities from entering the mold joint, reducing wear and damage caused by pollutants.

[0054] In terms of edge treatment, the edges of the bottle body mold 1 and the bottle bottom mold 3 are chamfered. The chamfering treatment not only reduces the sharpness of the mold edge and reduces the operation risk, but also improves the stress distribution of the mold, reduces the stress concentration phenomenon, and improves the compression resistance and structural stability of the mold during high-pressure forming. The rounded edges are smoother, which reduces the friction and wear of the mold during operation, extends the service life of the mold, and reduces the frequency and cost of maintenance and replacement. The chamfering treatment is usually completed by machining or grinding to ensure the smoothness and consistency of the edges.

[0055] Finally, the back plate 2 is provided with a support seat 21. The support seat 21 provides additional stability and support for the back plate 2, ensuring that the back plate 2 can bear the weight of the mold and the product 8 during operation, preventing the back plate 2 from deforming or shifting due to uneven force, greatly improving the overall stability and durability of the mold, and ensuring a smooth and reliable demolding process. The support seat 21 is usually made of a solid metal material and is fixed to the back plate 2 by welding or screws. The support seat 21 can also effectively disperse the pressure on the back plate 2 to avoid structural fatigue and damage caused by local stress concentration.

[0056] The implementation principle of the bottle bottom pop-up slider demoulding structure in the embodiment of the present application is:

[0057] The embodiment of the present application introduces a spring 6 pushing mechanism into the bottle bottom mold 3, so that the bottle bottom mold 3 moves outward under the action of the spring 6, separates the bottle bottom mold 3 from the bottle body mold 1, and then removes the product 8 upward from the bottle bottom mold 3. This design effectively avoids problems such as mold sticking, deformation, and streaking in the traditional demoulding process, thereby achieving efficient and smooth demoulding operation.

[0058] In order to ensure smooth demoulding, a lubricating device 7 is provided at the joint of the slideway 31 and the guide pillar 11 between the bottle bottom mold 3 and the bottle body mold 1, thereby reducing the friction during the sliding process. The application of the lubricating device 7 makes the demoulding operation smoother and significantly prolongs the service life of the slideway 31 and the guide pillar 11. At the same time, the hardened coating on the inner surface of the slideway 31 further improves the wear resistance and stability of the slideway 31, reducing wear and maintenance costs.

[0059] In addition, limit blocks 5 are provided on both sides of the slideway 31 to accurately limit the sliding range of the guide pillar 11 and prevent excessive sliding or dislocation, thereby ensuring the accuracy and stability of demoulding. In order to further improve the smoothness of sliding and the durability of the mold, a dust cover 33 is also provided on the side of the slideway 31 to prevent dust and impurities from entering the slideway 31 and keep the sliding surface clean.

[0060] During the sliding process, in order to absorb and mitigate the impact force generated when the guide column 11 collides with the limit block 5, a buffer pad 34 is provided in the slideway 31 near the limit block 5. The buffer pad 34 effectively protects the slideway 31 and the limit block 5, and provides a shock-absorbing effect to ensure a smoother sliding process. In addition, the buffer pad 34 also reduces the noise generated during the sliding process, improving the comfort and safety of the operation.

[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. A bottle bottom ejectable slider type demoulding structure, characterized in that: include: A bottle body mold (1), wherein the bottle body mold (1) is a split structure and is used for blow molding of a product (8); A back plate (2), the back plate (2) being fixed on a side of the bottle body mold (1) facing away from the product (8); A bottle bottom mold (3), the bottle bottom mold (3) is a split structure, and both are provided with a slideway (31) and a through hole (32), while the bottle body mold (1) is provided with a guide column (11) and a positioning hole (12), the guide column (11) is slidably connected to the slideway (31), and the through hole (32) is connected to the positioning hole (12) via a positioning pin (4) for positioning; Limit blocks (5), the limit blocks (5) being arranged on both sides of the slideway (31) to limit the sliding range of the guide column (11); A spring (6), wherein the spring (6) is installed between the bottle bottom mold (3) and the back plate (2) to push the bottle bottom mold (3) away from the back plate (2).

2. The bottle bottom ejectable slider demoulding structure according to claim 1, characterized in that: A lubrication device (7) is provided at the matching position between the slideway (31) and the guide column (11) between the bottle bottom mold (3) and the bottle body mold (1).

3. The bottle bottom ejectable slider type demoulding structure according to claim 2, characterized in that: The inner surface of the slideway (31) is provided with a hardened coating.

4. The bottle bottom ejectable slider type demoulding structure according to claim 3, characterized in that: A dust cover (33) is provided on the side of the slideway (31) of the bottle bottom mold (3).

5. The bottle bottom ejectable slider demoulding structure according to claim 4, characterized in that: A buffer pad (34) is provided in the slideway (31) of the bottle bottom mould (3) near the limiting block (5).

6. The bottle bottom ejectable slider demoulding structure according to claim 1, characterized in that: The positioning pin (4) is fixedly connected to an operating rod (41), and the operating rod (41) extends to the outside of the bottle bottom mold (3) and is used to control the locking and loosening of the positioning pin (4).

7. The bottle bottom ejectable slider demoulding structure according to claim 1, characterized in that: The bottle bottom mould (3) and the back plate (2) are both provided with spring placement grooves (35).

8. The bottle bottom ejectable slider demoulding structure according to claim 1, characterized in that: The joints between the bottle bottom moulds (3) are provided with sawtooth-shaped grooves (36), and the grooves (36) cooperate with each other.

9. The bottle bottom ejectable slider demoulding structure according to claim 1, characterized in that: The edges of the bottle body mold (1) and the bottle bottom mold (3) are rounded.

10. The bottle bottom ejectable slider demoulding structure according to claim 1, characterized in that: The back plate (2) is provided with a support seat (21).

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