A method for producing PVC plastic profiles using modified PVC materials

Abstract

This invention relates to the field of PVC plastic profile production, and more specifically, to a method for producing PVC plastic profiles using modified PVC materials. The method includes the following steps: Step 1: Heating and melting the modified PVC material to make it flowable and injecting it into a PVC plastic profile production device for molding; Step 2: Pushing the material within the PVC plastic profile production device to reduce porosity while simultaneously completing profile discharge; Step 3: Grinding the inner groove of the profile; Step 4: Collecting the ground plastic profile. The PVC plastic profile production device described in Step 1 includes a molding frame, a grinding frame fixed to the molding frame, and multiple auxiliary frames fixed to the grinding frame. Each auxiliary frame has a rotating grinding main shaft and two grinding auxiliary wheels. Each grinding main shaft has a grinding side wheel and a grinding surface wheel fixedly connected to it. This method is capable of grinding the inner groove of the PVC plastic profile.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of PVC plastic profile production, in particular to a method for producing PVC plastic profile by using PVC modified material. BACKGROUND

[0002] PVC is widely used in many technical fields as a high-yield plastic, but due to its poor heat resistance and low toughness, when manufacturing PVC profiles, it is usually modified, and then the modified PVC material is molded to produce PVC profiles. However, in the prior art, after the production of PVC profiles, the inner groove of the profile cannot be polished. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the present application provides a method for producing PVC plastic profile by using PVC modified material, which can polish the inner groove of the PVC plastic profile.

[0004] The technical scheme adopted by the present application to solve its technical problems is:

[0005] A method for producing PVC plastic profile by using PVC modified material, the method comprising the following steps:

[0006] Step 1: heat and melt the PVC modified material to make it flow and inject it into the PVC plastic profile production device for molding;

[0007] Step 2: push the material in the PVC plastic profile production device to reduce air holes while completing the profile discharge;

[0008] Step 3: polish the inner groove of the profile;

[0009] Step 4: collect the polished plastic profile.

[0010] Further, the PVC plastic profile production device in step 1 includes a molding frame, a polishing frame fixed to the molding frame, and a plurality of auxiliary frames fixed to the polishing frame, each auxiliary frame having a polishing main shaft and two polishing auxiliary wheels rotating thereon, and each polishing main shaft having a polishing side wheel and a polishing face wheel fixed thereto.

[0011] Further, the device further comprises a plurality of transmission wheels I fixed to the plurality of polishing main shafts, and a transmission wheel II fixed to each polishing auxiliary wheel, each transmission wheel I being in meshing transmission with the corresponding two transmission wheels II. BRIEF DESCRIPTION OF DRAWINGS

[0012] The present application will be further described in detail below with reference to the drawings and specific implementation methods.

[0013] Figure 1A method flow chart for producing PVC plastic profiles;

[0014] Figure 2 A structure diagram for shaping profiles and polishing profiles;

[0015] Figure 3 A structure diagram for shaping profiles;

[0016] Figure 4 A structure diagram for polishing profiles;

[0017] Figure 5 A structure diagram for power transmission;

[0018] Figure 6 A structure diagram for driving multiple polishing spindles to rotate synchronously;

[0019] Figure 7 A structure diagram for profile frames;

[0020] Figure 8 A structure diagram for polishing brushes;

[0021] Figure 9 A structure diagram for polishing holes in the middle of profiles;

[0022] Figure 10 A structure diagram of a PVC plastic profile production device.

[0023] Shaping frame 11; feed pipe 12; hollow pipe 13; shaping round rod 14; shaping square rod 15; polishing frame 21; auxiliary frame 22; polishing spindle 23; polishing side wheel 24; polishing face wheel 25; polishing auxiliary wheel 26; driven wheel 27; transmission wheel I 31; transmission wheel II 32; driving wheel 41; gear ring 42; power wheel 43; profile frame 51; air cylinder 52; end plate 61; polishing brush 62. DETAILED DESCRIPTION

[0024] REFERENCE Figure 1 The method flow chart for producing PVC plastic profiles is described in detail as follows:

[0025] A method for producing PVC plastic profiles by using PVC modified materials, which comprises the following steps:

[0026] Step one: heat and melt the PVC modified materials to make them flow, then inject or pour the flowing raw materials into the PVC plastic profile production device for shaping, and shape the flowing raw materials;

[0027] Step two: push the materials in the PVC plastic profile production device, increase the fineness of the flowing raw materials by external force, thereby reducing air holes, and push the materials to complete the shaping of the profiles for discharging;

[0028] Step three: polish the inner groove of the profile, so that the inner groove of the profile is smooth, which can be reliably connected during use;

[0029] Step four: collect the polished plastic profile and store the profile.

[0030] In combination with the above embodiments, the following functions can also be achieved;

[0031] Reference Figure 2 、 3 and 4, the implementation process of polishing the groove of the profile is described in detail:

[0032] The PVC plastic profile production device in step one includes a forming frame 11, a polishing frame 21 fixedly connected to the forming frame 11 by bolts, a plurality of auxiliary frames 22 fixedly connected to the polishing frame 21 by bolts, a polishing main shaft 23 and two polishing auxiliary wheels 26 rotatably connected to each auxiliary frame 22 by bearings, a polishing side wheel 24 and a polishing face wheel 25 fixedly connected to each polishing main shaft 23 by bolts, when the plurality of polishing main shafts 23 are forced to rotate, the plurality of polishing main shafts 23 drive the plurality of polishing side wheels 24 and the plurality of polishing face wheels 25 to rotate, the cross section of the profile is square, a spline-shaped hole is provided in the middle of the cross section of the profile, four lifting lugs are provided at the four corners, adjacent lifting lugs and the middle form a U-shaped groove with two inclined sides at the lower end, two inverted U-shaped grooves are provided on each lifting lug, the plurality of polishing side wheels 24 rotate to polish the U-shaped grooves of the profile, and the plurality of polishing face wheels 25 polish the side surfaces of the plurality of lifting lugs on the profile, the plurality of polishing auxiliary wheels 26 rotate to polish the two inverted U-shaped grooves on the lifting lugs and the inclined surfaces of the lower end U-shaped groove on the profile, thereby achieving polishing and machining of the grooves of the profile.

[0033] In combination with the above embodiments, the following functions can also be achieved;

[0034] Reference Figure 4 and 5 , the implementation process of driving the plurality of polishing auxiliary wheels to rotate is described in detail:

[0035] Each polishing main shaft 23 is fixedly connected to a transmission wheel I 31 by bolts, each polishing auxiliary wheel 26 is fixedly connected to a transmission wheel II 32 by bolts, and each transmission wheel I 31 is in meshing transmission with the corresponding two transmission wheels II 32, when the plurality of polishing main shafts 23 rotate to drive the plurality of transmission wheels I 31 to rotate, the plurality of transmission wheels I 31 drive the plurality of transmission wheels II 32 to rotate in meshing transmission, and the plurality of transmission wheels II 32 drive the plurality of polishing auxiliary wheels 26 to rotate, thereby completing the polishing of the inverted U-shaped grooves of the lifting lugs on the plurality of profiles.

[0036] In combination with the above embodiments, the following functions can also be achieved;

[0037] ReferenceFigure 4 、 5 and 6, the implementation process of driving the plurality of polishing spindles to rotate is described in detail:

[0038] Each polishing spindle 23 is fixedly connected with a driven wheel 27 through bolts, the polishing frame 21 is rotatably connected with a plurality of power wheels 43 through bearings, the polishing frame 21 is rotatably connected with a driving wheel 41, the driving wheel 41 is fixedly connected with a gear ring 42 through bolts, the gear ring 42 meshes with the plurality of power wheels 43 for transmission, the driving wheel 41 meshes with the plurality of driven wheels 27 for transmission, the plurality of power wheels 43 are fixedly connected with the output shafts of a plurality of speed reducer motors I respectively, the plurality of speed reducer motors I are fixedly connected with the polishing frame 21 through bolts, the plurality of speed reducer motors I are started, the plurality of speed reducer motors I drive the plurality of power wheels 43 to rotate, the plurality of power wheels 43 meshingly drive the gear ring 42 to rotate, the gear ring 42 drives the driving wheel 41 to rotate, the driving wheel 41 meshes with the plurality of driven wheels 27 to drive them to rotate, and the plurality of driven wheels 27 drive the plurality of polishing spindles 23 to rotate, thereby achieving the polishing of the inner groove of the profile.

[0039] In combination with the above embodiment, the following functions can also be achieved:

[0040] Reference Figure 2 and 3 , the implementation process of forming a plurality of round holes and a plurality of rectangular holes on the profile is described in detail:

[0041] The molding frame 11 is fixedly connected with a hollow pipe 13, a plurality of molding round rods 14 and a plurality of molding square rods 15 through bolts, the outer wall shape of the hollow pipe 13 is formed in the middle of the profile, and the hole positions corresponding to the plurality of molding round rods 14 and the plurality of molding square rods 15 are formed on the profile, the molding frame 11 is fixedly connected with a plurality of feeding pipes 12 through bolts, the plurality of feeding pipes 12 are located at the upper end of the lifting lug, and the PVC modified material after heating and melting is added from the plurality of feeding pipes 12, so that the raw material can be formed into a complete structure at the upper end of the lifting lug, preventing the upper end of the lifting lug from being incompletely formed, thereby achieving the production process of forming the profile.

[0042] In combination with the above embodiment, the following functions can also be achieved:

[0043] Reference Figure 7 , 9 and 10, the implementation process of pushing the material to increase the air tightness of the profile while discharging the profile is described in detail:

[0044] The profile frame 51 is slidingly connected on the forming frame 11, the hollow pipe 13, the plurality of forming round rods 14 and the plurality of forming square rods 15, the profile frame 51 is fixedly connected on the cylinder rods of the plurality of air cylinders 52, the plurality of air cylinders 52 are fixedly connected on the forming frame 11 through bolts, the plurality of air cylinders 52 are started, the cylinder rods of the plurality of air cylinders 52 jointly push the profile frame 51 to slide, the profile frame 51 slides and pushes down the materials to slide, which can make the materials more compact, the formed profile has fewer pores, and at the same time, the profile can be discharged, the maximum sliding distance of the profile frame 51 will not slide to the position of the plurality of feeding pipes 12, which prevents the materials from flowing into the space between the profile frame 51 and the forming frame 11, causing waste of materials and preventing the profile frame 51 from normally moving.

[0045] In combination with the above-mentioned embodiments, the following functions can also be realized.

[0046] Reference Figure 8 and 9 , the implementation process of polishing the hole in the middle of the profile is described in detail:

[0047] The polishing brush 62 is rotatably connected on the hollow pipe 13 through a bearing, the polishing brush 62 is fixedly connected on the output shaft of the speed reducer motor II through a shaft coupling, the speed reducer motor II is fixedly connected on the forming frame 11 through bolts, the speed reducer motor II is started, and the speed reducer motor II drives the polishing brush 62 to rotate, which can polish the hole in the middle of the profile.

[0048] In combination with the above-mentioned embodiments, the following functions can also be realized.

[0049] Reference Figure 8 , the implementation process of supporting reliable rotation of the polishing brush is described in detail:

[0050] The end plate 61 is fixedly connected on the hollow pipe 13 through bolts, and the polishing brush 62 is rotatably connected on the end plate 61 through a bearing, so that both ends of the polishing brush 62 are supported when the polishing brush 62 rotates, which can ensure reliable rotation of the polishing brush 62 and prevent the polishing brush 62 from producing unqualified circular runout when rotating, thereby affecting the quality of the polished profile.

[0051] In combination with the above-mentioned embodiments, the following functions can also be realized.

[0052] Reference Figure 3 and 10 , the implementation process of ensuring that the profile can be cooled during forming is described in detail:

[0053] The cavity for cooling is arranged in the forming frame 11, the cavity is connected and communicated with the external cold water circulating device, which can realize circulation of cold water and cooling of the profile formed at the end of the forming frame 11 through circulation of cold water, so as to ensure that the formed profile is shaped, thereby producing qualified profiles.

[0054] In combination with the above embodiments, the following functions can also be implemented.

[0055] Reference Figure 7 And 10 The implementation process of pushing the raw material extrusion and the profile unloading is described in detail:

[0056] A sliding seal is provided between the profile frame 51 and the structure sliding with it, which can prevent the raw material from leaking from the sliding gap of the profile frame 51, causing the raw material to leak in the forming frame 11, causing the raw material to appear in the gap between the profile frame 51 and the forming frame 11, causing the profile frame 51 to be unable to move, affecting the production of the profile.

Claims

1. A method for producing PVC plastic profiles using modified PVC materials, characterized in that: The method includes the following steps: Step 1: Heat and melt the modified PVC material to make it flowable and inject it into the PVC plastic profile production device for molding; Step 2: Push the material inside the PVC plastic profile production device to reduce air holes while simultaneously completing the profile discharge; Step 3: Grind the inner groove of the profile; Step 4: Collect the polished plastic profiles; The PVC plastic profile production device described in Step 1 includes a molding frame (11), a polishing frame (21) fixed on the molding frame (11), and multiple auxiliary frames (22) fixed on the polishing frame (21). Each auxiliary frame (22) has a polishing main shaft (23) and two polishing auxiliary wheels (26) rotating on it. Each polishing main shaft (23) has a polishing side wheel (24) and a polishing surface wheel (25) fixed on it. The device also includes multiple transmission wheels I (31) fixedly connected to multiple grinding spindles (23), and transmission wheels II (32) fixedly connected to each grinding auxiliary wheel (26), each transmission wheel I (31) meshing with the corresponding two transmission wheels II (32) for transmission; The device also includes driven wheels (27) fixedly connected to each grinding spindle (23), driving wheels (41) that drive multiple driven wheels (27) to rotate synchronously, gear rings (42) fixedly connected to driving wheels (41), and multiple power wheels (43) that drive gear rings (42) to rotate. The driving wheels (41) and multiple power wheels (43) all rotate on the grinding frame (21). The device also includes a hollow tube (13) fixed to the molding frame (11), a plurality of molding round rods (14) and a plurality of molding square rods (15), and a plurality of feed pipes (12) fixed to the molding frame (11). The device also includes a profile frame (51) that slides on the molding frame (11), the hollow tube (13), a plurality of molding round rods (14) and a plurality of molding square rods (15) to push the profile out, and a plurality of cylinders (52) fixed on the molding frame (11) to push the profile frame (51) to slide. The device also includes a polishing brush (62) that rotates on the hollow tube (13). The device also includes an end plate (61) fixed to the hollow tube (13) to assist the rotation of the polishing brush (62). The molding frame (11) is provided with a cavity for cooling.

2. The method for producing PVC plastic profiles using modified PVC materials according to claim 1, characterized in that: A sliding seal is provided between the profile frame (51) and the structure that slides therethrough.

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