Automatic production equipment for PVC (polyvinyl chloride) guardrails

Abstract

The invention relates to the technical field of PVC guardrail production, in particular to automatic PVC guardrail production equipment which is characterized in that an air cylinder is fixedly mounted at the top of a supporting base, a pneumatic rod is fixedly mounted at the output end of the air cylinder, a first mold is fixedly mounted at the end, away from the air cylinder, of the pneumatic rod, and a mounting plate is fixedly mounted in the first mold; a first spring is fixedly mounted at the end, close to the first mold, of the mounting plate, a mounting disc is fixedly mounted at the end, away from the mounting plate, of the first spring, a mounting cylinder is fixedly mounted in the mounting disc, and a turning plate is connected to the end, away from the mounting plate, of the mounting cylinder through a hinge; through cooperative work of the casting machine, the stamping pump and the multiple sets of air pipes, the PVC solution is rapidly and evenly filled between the first mold and the second mold, and primary forming is completed. Through the design, the problem of non-uniformity possibly caused by manual pouring is avoided, and the forming quality and the production efficiency of products are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of PVC guardrail production, and in particular to automatic production equipment for PVC guardrails. Background Art

[0002] In the field of building decoration and protection, PVC guardrails are widely used in various places such as residential areas, commercial building perimeters, and road barriers due to their corrosion resistance, aesthetics, and relatively low cost. As the market demand for PVC guardrails continues to grow, the requirements for production efficiency and quality are also increasing.

[0003] In traditional PVC guardrail production, solution pouring is largely manual. Manual pouring presents numerous drawbacks. Firstly, it's difficult to maintain a consistent pouring speed. Workers, fatigued and otherwise, can cause the pouring speed to fluctuate, leading to unstable flow of the PVC solution within the mold and affecting the uniformity of the final product. Secondly, manual pouring struggles to achieve uniform solution distribution. For example, in large molds, workers may be unable to accurately control the amount of solution filled in each area, leading to localized accumulation or underfilling. Accumulation can result in excessive thickness in the PVC guardrail, impacting both its aesthetics and mechanical properties. Inadequate filling can also lead to insufficient strength and susceptibility to damage during use. These quality issues not only reduce product qualification rates and increase production costs, but can also pose safety risks in the field.

[0004] Furthermore, manual pouring has relatively low production efficiency, making it difficult to meet growing market demand. With the acceleration of urbanization, demand for PVC guardrails in various construction projects has skyrocketed. The production speed of traditional manual pouring methods has severely constrained companies' production capacity, leading to insufficient market supply and hindering the progress of related projects. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides an automatic production device for PVC guardrails, thereby solving the technical problems mentioned in the background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A kind of automatic production equipment for PVC guardrails includes a support base, characterized in that a forming mechanism is fixedly installed on the top of the support base, the forming mechanism includes a cylinder, the cylinder is fixedly installed on the top of the support base, a pneumatic rod is fixedly installed on the output end of the cylinder, a first mold is fixedly installed on the end of the pneumatic rod away from the cylinder, a mounting plate is fixedly installed inside the first mold, a first spring is fixedly installed on the end of the mounting plate close to the first mold, a mounting disk is fixedly installed on the end of the first spring away from the mounting plate, a mounting tube is fixedly installed inside the mounting disk, and the end of the mounting tube away from the mounting plate is connected to a flap via a hinge.

[0008] In one possible implementation, a heating plate is fixedly mounted on the side wall of the first mold, the mounting cylinder is slidably mounted inside the first mold, a stamping pump is fixedly mounted on the side wall of the support base, a first air pipe is fixedly mounted on the output end of the stamping pump, a U-shaped tube is fixedly mounted on the end of the first air pipe away from the stamping pump, a first valve is provided inside the left side pipe of the U-shaped tube, and the U-shaped tube is fixedly mounted to the first mold.

[0009] In a possible implementation, second trachea are fixedly installed on both upper and lower sides of the first trachea, second valves are provided inside the two second trachea, and a third trachea is fixedly installed on one end of the two second trachea away from the first trachea.

[0010] In a possible implementation, a third valve is fixedly installed inside the third trachea, a first connecting tube is fixedly installed at one end of the two third trachea away from the second trachea, and a second connecting tube is slidably installed inside the two first connecting tubes.

[0011] In a possible implementation, a casting machine is fixedly mounted on one end of the two first connecting tubes away from the second connecting tube, a second mold is slidably mounted on the support base, and a sliding rod is fixedly mounted on one end of the second mold away from the first mold.

[0012] In a possible implementation, the sliding rod is slidably mounted inside the support base, a first rack is fixedly mounted on the side wall of the second mold, and the first rack is slidably mounted inside the support base.

[0013] In a possible implementation, a first gear is meshedly mounted on a side wall of the first rack, the first gear is rotatably mounted on a side wall of the support base, and a first synchronous belt drive assembly is transmission-mounted on the side wall of the first gear.

[0014] In one possible implementation, the first gear side wall is transmission-mounted with a second synchronous belt transmission assembly, the support base side wall is fixedly mounted with a servo motor, the servo motor output shaft is rotatably mounted on the support base side wall, and the servo motor output shaft side wall is transmission-mounted with the second synchronous belt transmission assembly.

[0015] In one possible implementation, the second synchronous belt transmission assembly is internally installed with a second gear, the second gear is rotatably installed on the side wall of the support base, the second gear side wall is meshed with a second rack, and the second rack side wall is fixedly installed with a third mold.

[0016] In one possible implementation, a fixed rod is slidably installed inside the third mold, a top plate is fixedly installed on one end of the fixed rod close to the third mold, a connecting plate is fixedly installed on the side wall of the support base, the fixed rod is slidably installed inside the connecting plate, a second spring is fixedly installed on one end of the connecting plate away from the second mold, and the second spring is fixedly installed on the fixed rod at one end away from the connecting plate.

[0017] Beneficial effects compared with existing technologies:

[0018] 1. In this solution, the pouring machine, ram pump, and multiple sets of air pipes work together to quickly and evenly fill the PVC solution between the first and second molds, completing the initial molding process. This design avoids the unevenness that can occur with manual pouring, improving product molding quality and production efficiency. For example, traditional manual pouring can result in localized solution accumulation or insufficient filling, while this equipment ensures comprehensive and even distribution of the solution, guaranteeing the quality and stability of the PVC guardrail.

[0019] 2. In this solution, a servo motor precisely controls the movement of the second mold through a synchronous belt drive assembly and a rack-and-pinion structure, enabling it to open in the appropriate position to facilitate removal of the first mold while also providing a stable molding environment during the remaining stages. Furthermore, the negative pressure generated by the stamping pump's suction achieves suction of the half-shells, providing a clever and reliable operation. This design not only increases the automation level of the production process but also reduces the potential for errors caused by manual intervention, improving production accuracy and product consistency.

[0020] 3. In this solution, the third air pipe not only assists in transferring gas to the first connecting pipe during the molding phase, ensuring that the PVC solution is fully filled between the first and second molds, but also ejects gas in subsequent stages to expel any remaining solution within the first connecting pipe, preventing solidification and clogging. This design, in which the same component performs different key functions at different production stages, simplifies the equipment structure, reduces the use of additional components, lowers equipment costs and the risk of failure, while improving the consistency and reliability of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic structural diagram of the connecting plate of the present invention;

[0024] Figure 3 It is a schematic diagram of the sliding rod structure of the present invention;

[0025] Figure 4 Schematic diagram of the second rack structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the heating plate structure of the present invention;

[0027] Figure 6 It is a schematic diagram of the mounting plate structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the mounting tube structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the third trachea structure of the present invention.

[0030] Legend: 11. Support base; 12. Pneumatic rod; 13. First mold; 14. Mounting plate; 15. Mounting cylinder; 16. Mounting plate; 17. First spring; 18. Flip plate; 19. Stamping pump; 21. First air pipe; 22. U-shaped pipe; 23. Second air pipe; 24. Third air pipe; 25. First connecting pipe; 26. Second connecting pipe; 27. Second mold; 28. Sliding rod; 29. First rack; 31. First gear; 32. First synchronous belt drive assembly; 33. Second synchronous belt drive assembly; 34. Second gear; 35. Servo motor; 36. Second rack; 37. Third mold; 38. Fixed rod; 39. Top plate; 41. Second spring; 42. Connecting plate; 43. Heating plate; 45. Cylinder. DETAILED DESCRIPTION

[0031] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can be implemented in various forms, and therefore the present invention is not limited to the embodiments described below. In addition, in order to more clearly describe the present invention, components that are not related to the present invention will be omitted from the drawings.

[0032] The technical solution in the embodiments of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0033] Example:

[0034] Please refer to Figures 1 to 8 As shown, this embodiment introduces an automatic production device for PVC guardrails, including a support base 11. When in use, the pouring machine is started to allow the PVC solution inside the pouring machine to be filled into the first connecting pipe 25. A cylinder 45 is fixedly mounted on the top of the support base 11, and a pneumatic rod 12 is fixedly mounted on the output end of the cylinder 45. A first mold 13 is fixedly mounted on the end of the pneumatic rod 12 away from the cylinder 45. The first connecting pipe 25 fills the solution into the second connecting pipe 26, and the second connecting pipe 26 then injects the solution into the second mold 27. When the solution is almost full, the stamping pump 19 is started;

[0035] A mounting plate 14 is fixedly installed inside the first mold 13, and a first spring 17 is fixedly installed on one end of the mounting plate 14 close to the first mold 13, and a mounting disk 16 is fixedly installed on one end of the first spring 17 away from the mounting plate 14, and a mounting cylinder 15 is fixedly installed inside the mounting disk 16. The mounting cylinder 15 is slidably installed inside the first mold 13, and the end of the mounting cylinder 15 away from the mounting plate 14 is connected to a flap 18 by a hinge. The punching pump 19 transmits gas to the inside of the first air pipe 21, and transmits gas to the inside of the second air pipe 23 through the first air pipe 21. The second air pipe 23 then transmits gas to the inside of the first connecting pipe 25, and the third air pipe 24 then transmits gas to the inside of the first connecting pipe 25. The blowing of the gas completely fills the PVC solution between the first mold 13 and the second mold 27. At this time, the mounting cylinder 15 cannot push open the flap 18 due to the extrusion of the air pressure and the PVC solution, and the solution will not enter the inside of the mounting cylinder 15. A stamping pump 19 is fixedly installed on the side wall of the support base 11, and a first air pipe 21 is fixedly installed on the output end of the stamping pump 19. A U-shaped tube 22 is fixedly installed on the end of the first air pipe 21 away from the stamping pump 19. A first valve is provided inside the left pipe of the U-shaped tube 22. The U-shaped tube 22 is fixedly installed to the first mold 13. Second air pipes 23 are fixedly installed on the upper and lower sides of the first air pipe 21. Second valves are provided inside the two second air pipes 23. A third air pipe 24 is fixedly installed on the end of the two second air pipes 23 away from the first air pipe 21. A third valve is fixedly installed inside the third air pipe 24. A first connecting pipe 25 is fixedly installed on the end of the two third air pipes 24 away from the second air pipe 23. A second connecting pipe 26 is slidably installed inside the two first connecting pipes 25. A casting machine is fixedly installed on the end of the two first connecting pipes 25 away from the second connecting pipe 26. After waiting for the PVC solution to cool, the servo motor 35 is started;

[0036] The support base 11 is slidably mounted with a second mold 27, and a sliding rod 28 is fixedly mounted on one end of the second mold 27 away from the first mold 13, and the sliding rod 28 is slidably mounted inside the support base 11, and a first rack 29 is fixedly mounted on the side wall of the second mold 27, and the first rack 29 is slidably mounted inside the support base 11, and a first gear 31 is meshed with the side wall of the first rack 29. The servo motor 35 rotates counterclockwise to drive the second synchronous belt transmission assembly 33 counterclockwise, and the second synchronous belt transmission assembly 33 drives the first gear 31 to rotate counterclockwise, and the first gear 31 drives the first synchronous belt transmission assembly 32 counterclockwise. The first gear 31 causes the two first racks 29 to move up and down respectively, and the first rack 29 drives the second mold 27 to move up and down. The second mold 27 drives the sliding rod 28 to move up and down inside the support base 11, increasing the stability of the device. At this time, the second mold 27 is not opened to the maximum, and the first mold 13 can be taken out from the inside of the second mold 27. The first gear 31 is rotatably mounted on the side wall of the support base 11. The first synchronous belt transmission assembly 32 is installed on the side wall of the first gear 31 for transmission. The second synchronous belt transmission assembly 33 is installed on the side wall of the first gear 31 for transmission. At this time, the stamping pump 19 is started to suck air. Because there is a third valve inside the third air pipe 24, the third air pipe 24 will not be able to suck out gas here, and the PVC solution cannot flow back from the third air pipe 24 into the second air pipe 23. The gas inside the first air pipe 21 will be sucked out by the stamping pump 19 to form a negative pressure. The first air pipe 21 forms a negative pressure inside the first mold 13. The first mold 13 moves the mounting plate 16 from both sides to the middle. The mounting plate 16 drives the mounting cylinder 15 to move from both sides to the middle. At this time, the first spring 17 will be compressed by force, the flap 18 will be in a closed state, and the mounting cylinder 15 will be inserted into the mounting plate 14, so that the first mold 13 adsorbs the half shell.

[0037] A servo motor 35 is fixedly installed on the side wall of the support base 11, and the output shaft of the servo motor 35 is rotatably installed on the side wall of the support base 11. The side wall of the output shaft of the servo motor 35 is installed for transmission with the second synchronous belt drive assembly 33. Then the cylinder 45 is started, and the cylinder 45 drives the pneumatic rod 12 to extend. The pneumatic rod 12 drives the first mold 13 that adsorbs the half shell to move from left to right, and the first mold 13 drives the heating plate 43 to move from left to right. The second synchronous belt transmission assembly 33 is internally installed with a second gear 34, and the second gear 34 is rotatably installed on the side wall of the support base 11. When the heating plate 43 moves between the third mold 37, the servo motor 35 is started again, and the servo motor 35 rotates counterclockwise to drive the second synchronous belt transmission assembly 33 counterclockwise. The second synchronous belt transmission assembly 33 drives the second gear 34 to rotate counterclockwise, and the second gear 34 drives the second rack 36 to move from both sides to the middle. The second rack 36 drives the third mold 37 to move from both sides to the middle. The third mold 37 clamps the heating plate 43, and the heating plate 43 heats the third mold 37. The second rack 36 is meshed with the side wall of the second gear 34, and the third mold 37 is fixedly installed on the side wall of the second rack 36. The servo motor 35 is then started, and the servo motor 35 drives the second synchronous belt drive assembly 33 to drive clockwise, so that the third mold 37 moves from the middle to both sides. The cylinder 45 is started again, and the cylinder 45 drives the first mold 13 to move from left to right. When the first mold 13 moves to the third mold 37, the third mold 37 clamps the first mold 13, and the third mold 37 heats the half shell, and the third mold 37 will be in a semi-melted state. A fixing rod 38 is slidably installed inside the third mold 37. A top plate 39 is fixedly installed on one end of the fixing rod 38 close to the third mold 37. The punching pump 19 is started again, and the punching pump 19 will spray gas again. At this time, the flap 18 will flip over and spray gas, so that the half shell is no longer adsorbed on the side wall of the first mold 13. At the same time, the third air pipe 24 sprays gas to spray out the residual solution in the first connecting tube 25 to prevent solidification inside the first connecting tube 25.

[0038] A connecting plate 42 is fixedly installed on the side wall of the support base 11, and a fixing rod 38 is slidably installed inside the connecting plate 42. A second spring 41 is fixedly installed on the end of the connecting plate 42 away from the second mold 27. The end of the second spring 41 away from the connecting plate 42 is fixedly installed to the fixing rod 38. At this time, the third mold 37 moves from the middle to both sides again. At this time, the half shell will adhere to the inside of the third mold 37. The punching pump 19 is started again. The punching pump 19 drives the first mold 13 to move from right to left to the maximum formation. The first mold 13 will return to the third mold 37 and close the third mold 37 again. The third mold 37 will combine the two half shells into a complete guardrail. A heating plate 43 is fixedly installed on the side wall of the first mold 13. The third mold 37 is opened again. When the guardrail contacts the top plate 39, the top plate 39 pushes the guardrail out of the third mold 37 to complete the demoulding operation.

[0039] Working principle: solution injection and initial molding

[0040] Solution injection: When using the equipment, first start the pouring machine, so that the PVC solution inside the pouring machine is filled into the first connecting pipe 25, and the solution flows through the first connecting pipe 25 into the second connecting pipe 26, and then is injected into the second mold 27. When the solution is about to fill the second mold 27, start the punching pump 19.

[0041] Gas-assisted molding: The ram pump 19 transmits gas to the first air pipe 21. The gas is then diverted through the first air pipe 21 to the upper and lower second air pipes 23, and then enters the first connecting pipe 25 through the second and third air pipes 23 and 24. The gas blowing completely fills the space between the first mold 13 and the second mold 27. During this process, due to the air pressure and the squeeze of the PVC solution, the installation cylinder 15 installed inside the first mold 13 is unable to push open the hinged flap 18 at one end, thus preventing the solution from entering the installation cylinder 15 and ensuring the initial formation of the PVC guardrail between the first mold 13 and the second mold 27.

[0042] Mold separation and half-shell adsorption

[0043] Mold Separation: After the PVC solution cools, the servo motor 35 is activated. The servo motor 35 rotates counterclockwise, driving the first gear 31 counterclockwise via the second synchronous belt drive assembly 33. The first gear 31, through the first synchronous belt drive assembly 32 and its meshing with the first rack 29, causes the two first racks 29 to move up and down, in turn driving the second mold 27 up and down. The second mold 27 drives the sliding rod 28 to slide up and down within the support base 11, increasing the stability of the device. At this point, the second mold 27 is not fully opened, allowing the first mold 13 to be removed from the interior of the second mold 27.

[0044] Half-shell adsorption: After the first mold 13 is taken out, the punching pump 19 is started to absorb air. Due to the action of the third valve inside the third air tube 24, the gas cannot be sucked out here, which prevents the PVC solution from flowing back from the third air tube 24 into the second air tube 23. The gas inside the first air tube 21 is sucked out to form a negative pressure, which in turn forms a negative pressure inside the first mold 13. Under the action of negative pressure, the first mold 13 moves the mounting plate 16 from both sides to the middle, and the mounting plate 16 drives the mounting cylinder 15 to move synchronously. The first spring 17 is compressed by force, the flap 18 is closed, and the mounting cylinder 15 is inserted into the interior of the mounting plate 14. Finally, the first mold 13 adsorbs the half-shell.

[0045] Heating and secondary molding

[0046] Heating preparation: After the half shells are attached, the cylinder 45 is activated, which drives the pneumatic rod 12 to extend, causing the first mold 13, which is attached to the half shells, and the heating plate 43 fixed to its side wall to move from left to right. When the heating plate 43 moves between the third mold 37, the servo motor 35 is activated again.

[0047] Heating process: The servo motor 35 rotates counterclockwise, driving the second gear 34 counterclockwise via the second synchronous belt drive assembly 33. The second gear 34 meshes with the second rack 36, driving the second rack 36 to move from both sides toward the center. This in turn causes the third mold 37 to move from both sides toward the center, clamping the heating plate 43. At this point, the heating plate 43 heats the third mold 37. Afterwards, the servo motor 35 drives the second synchronous belt drive assembly 33 clockwise, moving the third mold 37 from the center toward both sides. The cylinder 45 is activated again, driving the first mold 13 from left to right to the third mold 37. The third mold 37 clamps the first mold 13, and the heat previously transferred from the heating plate 43 is used to heat the half shell, leaving it in a semi-melted state.

[0048] Demolding and finished product

[0049] Demolding Preparation: After the half-shells are heated to a semi-melted state, the pressurizing pump 19 is activated again to release gas. The gas pressure causes the flap 18 to open, releasing the gas, releasing the half-shells from the sidewalls of the first mold 13. Simultaneously, the third air pipe 24 releases gas, expelling any remaining solution from the interior of the first connecting tube 25 to prevent solidification. Subsequently, the third mold 37 moves from the center outward, allowing the half-shells to adhere to the interior of the third mold 37.

[0050] Finished product demolding: The punch pump 19 is restarted, driving the first mold 13 from right to left to its maximum stroke, returning it to the space between the third molds 37. The third mold 37 is closed again, combining the two halves into a complete guardrail. Finally, the third mold 37 is opened. When the guardrail contacts the top plate 39 fixed to one end of the fixed rod 38 inside the third mold 37, the top plate 39, under the action of the second spring 41, pushes the guardrail out of the third mold 37, completing the demolding operation and obtaining the finished PVC guardrail.

[0051] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all embodiments. However, obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A PVC guardrail automatic production equipment, comprising a support base (11), characterized in that: A forming mechanism is fixedly mounted on the top of the support base (11), and the forming mechanism includes a cylinder (45); The cylinder (45) is fixedly mounted on the top of the support base (11); a pneumatic rod (12) is fixedly mounted on the output end of the cylinder (45); a first mold (13) is fixedly mounted on the end of the pneumatic rod (12) away from the cylinder (45); a mounting plate (14) is fixedly mounted inside the first mold (13); a first spring (17) is fixedly mounted on the end of the mounting plate (14) close to the first mold (13); a mounting plate (16) is fixedly mounted on the end of the first spring (17) away from the mounting plate (14); a mounting tube (15) is fixedly mounted inside the mounting plate (16); and an end of the mounting tube (15) away from the mounting plate (14) is connected to a flap (18) via a hinge.

2. The automatic production equipment for PVC guardrail according to claim 1, characterized in that: A heating plate (43) is fixedly mounted on the side wall of the first mold (13), the mounting cylinder (15) is slidably mounted inside the first mold (13), a punching pump (19) is fixedly mounted on the side wall of the support base (11), a first air pipe (21) is fixedly mounted on the output end of the punching pump (19), a U-shaped tube (22) is fixedly mounted on one end of the first air pipe (21) away from the punching pump (19), a first valve is provided inside the left side of the U-shaped tube (22), and the U-shaped tube (22) is fixedly mounted on the first mold (13).

3. The automatic production equipment for PVC guardrail according to claim 2, characterized in that: Second tracheas (23) are fixedly mounted on both upper and lower sides of the first trachea (21), second valves are provided inside the two second tracheas (23), and third tracheas (24) are fixedly mounted on one end of the two second tracheas (23) away from the first trachea (21).

4. The automatic production equipment for PVC guardrail according to claim 3, characterized in that: A third valve is fixedly installed inside the third trachea (24), a first connecting tube (25) is fixedly installed at one end of the two third trachea (24) away from the second trachea (23), and a second connecting tube (26) is slidably installed inside the two first connecting tubes (25).

5. The automatic production equipment for PVC guardrail according to claim 4, characterized in that: A casting machine is fixedly mounted on one end of the two first connecting tubes (25) away from the second connecting tube (26), a second mold (27) is slidably mounted on the support base (11), and a sliding rod (28) is fixedly mounted on one end of the second mold (27) away from the first mold (13).

6. The automatic production equipment for PVC guardrail according to claim 5, characterized in that: The sliding rod (28) is slidably mounted inside the support base (11), and a first rack (29) is fixedly mounted on the side wall of the second mold (27), and the first rack (29) is slidably mounted inside the support base (11).

7. The automatic production equipment for PVC guardrail according to claim 6, characterized in that: A first gear (31) is meshedly mounted on the side wall of the first rack (29), the first gear (31) is rotatably mounted on the side wall of the support base (11), and a first synchronous belt drive assembly (32) is drive-mounted on the side wall of the first gear (31).

8. The automatic production equipment for PVC guardrail according to claim 7, characterized in that: The side wall of the first gear (31) is transmission-mounted with a second synchronous belt transmission assembly (33), the side wall of the support base (11) is fixedly mounted with a servo motor (35), the output shaft of the servo motor (35) is rotationally mounted on the side wall of the support base (11), and the side wall of the output shaft of the servo motor (35) is transmission-mounted with the second synchronous belt transmission assembly (33).

9. The automatic production equipment for PVC guardrails according to claim 8, characterized in that: The second synchronous belt transmission assembly (33) is internally driven by a second gear (34), the second gear (34) is rotatably mounted on the side wall of the support base (11), the side wall of the second gear (34) is meshed with a second rack (36), and the side wall of the second rack (36) is fixedly mounted with a third mold (37).

10. The automatic production equipment for PVC guardrail according to claim 9, characterized in that: A fixing rod (38) is slidably mounted inside the third mold (37), a top plate (39) is fixedly mounted on one end of the fixing rod (38) close to the third mold (37), a connecting plate (42) is fixedly mounted on the side wall of the support base (11), the fixing rod (38) is slidably mounted inside the connecting plate (42), a second spring (41) is fixedly mounted on one end of the connecting plate (42) away from the second mold (27), and the second spring (41) is fixedly mounted on the fixing rod (38) at one end away from the connecting plate (42).

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