Automatic welding mechanism for PVC (polyvinyl chloride) pipe

Abstract

The utility model discloses an automatic welding mechanism for a PVC pipe. The automatic welding mechanism comprises a workbench, a first clamping assembly, a second clamping assembly and a heating assembly. The workbench is sequentially divided into a first end, a middle end and a second end, the first end is connected with the first clamping assembly, the second end is connected with the second clamping assembly, and the middle end is connected with the heating assembly. An automatic PVC pipe welding mechanism is controlled by an air cylinder to act, temperature control is achieved through a thermocouple type heating plate, and automatic control is achieved through a PLC. Automatic production of the welding procedure of the PVC pipe is achieved, the clamping, heating, melting and fusing processes of the PVC pipe can be automatically completed, and therefore the production efficiency is greatly improved, and meanwhile the consistency and stability of the welding quality are guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of PVC pipe production and processing technology, and relates to an automatic welding mechanism for PVC pipes. Background Technology

[0002] PVC pipe, or polyvinyl chloride pipe, is mainly made of polyvinyl chloride resin combined with stabilizers, lubricants, etc., and then extruded by hot pressing. It is a popular and widely used synthetic material for pipes worldwide. Hot fusion welding uses specialized hot fusion equipment to heat the joint of the pipe and fitting to a molten state, then quickly join them and cool to solidify, resulting in a high connection strength and good sealing performance.

[0003] In past production practices, the welding of PVC pipes mainly relied on manual operation. The specific process involved using hands to heat two sections of PVC pipe close to a heating plate until they melted, and then manually fusing them. Although some equipment could automatically move the PVC pipes, the clamping part still needed to be manually installed. These traditional methods were not only inefficient and difficult to meet the needs of large-scale production, but also difficult to guarantee the consistency of welding quality, and were prone to poor welding results due to human factors. Utility Model Content

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] An automatic PVC pipe welding mechanism includes: a workbench, a first clamping assembly, a second clamping assembly, and a heating assembly; the workbench is sequentially divided into a first end, a middle end, and a second end, the first end is connected to the first clamping assembly, the second end is connected to the second clamping assembly, and the middle end is connected to the heating assembly;

[0006] The first clamping assembly includes a first clamping part and a first moving part. The first moving part includes a first guide rail, a first fixing member, and a first cylinder. The first clamping part includes a side plate, a first lower clamping plate, a first upper clamping plate, and a second cylinder. The first end of the worktable is provided with the first guide rail and the first cylinder. The first cylinder is connected to the first fixing member, and the first fixing member slides on the first guide rail. The side plate and the first lower clamping plate are connected to the first fixing member. The upper end of the side plate is connected to the first upper clamping plate through the second cylinder. The positions of the first upper clamping plate and the first lower clamping plate are corresponding.

[0007] The second clamping assembly includes a second clamping part and a second moving part. The second moving part includes a second guide rail, a second fixing member, and a third cylinder. The second clamping part includes a rod, a second lower clamping plate, a second upper clamping plate, and a fourth cylinder. The second end of the worktable is provided with the second guide rail. The third cylinder is connected to the second fixing member, and the second fixing member slides on the second guide rail. The rod and the second lower clamping plate are connected to the second fixing member. The upper end of the rod is connected to the second upper clamping plate through the fourth cylinder. The second upper clamping plate and the second lower clamping plate are positioned correspondingly.

[0008] The heating component includes a heating plate and a third moving part. The third moving part includes a third guide rail, a third fixing member, and a fifth cylinder. The third guide rail is provided at the middle of the worktable. The fifth cylinder is connected to the third fixing member, and the third fixing member slides on the third guide rail. The heating plate is connected to the third fixing member.

[0009] The axes of the first guide rail and the second guide rail coincide, and the axis of the third guide rail is perpendicular to the axis of the first guide rail.

[0010] As a further embodiment of this utility model: the first guide rail and the second guide rail are cylindrical guide rails; the first guide rail consists of two rows arranged in parallel, and the lower end of the first fixing member is provided with four first fixing posts, each of which has a first through hole, which is fitted onto the first guide rail; the second guide rail consists of two rows arranged in parallel, and the lower end of the second fixing member is provided with four second fixing posts, each of which has a second through hole, which is fitted onto the second guide rail.

[0011] As a further embodiment of this utility model: the third guide rail is an I-shaped guide rail, the third guide rail consists of two rows, the two rows of the third guide rail are arranged in parallel, and the lower end of the fixing member is connected to four first sliders, the shape of the sliders being matched with the I-shaped guide rail.

[0012] As a further embodiment of this utility model: the rod includes two vertical rods and a connecting rod, the two vertical rods are arranged in parallel, the connecting rod is sleeved on the two vertical rods, and the connecting rod is connected to the fourth cylinder.

[0013] As a further embodiment of this utility model: the heating component further includes a second slider, a fourth guide rail and a sixth cylinder, the tail of the fifth cylinder is connected to the second slider, the sixth cylinder is connected to the second slider, and the sixth cylinder drives the second slider to move on the fourth guide rail.

[0014] As a further embodiment of this utility model: the second clamping part further includes a third slider and a fifth guide rail, the second fixing member is provided with the fifth guide rail, a plurality of the third sliders are spaced apart on the fifth guide rail and slide on the fifth guide rail, and the rod and the second lower clamping plate are respectively provided on the third sliders.

[0015] As a further embodiment of the present invention, the second clamping assembly further includes a support portion, which is disposed on the third slider.

[0016] As a further embodiment of this utility model: the first lower clamping plate, the first upper clamping plate, the second lower clamping plate, and the second upper clamping plate are all semi-circular ring structures.

[0017] As a further embodiment of this utility model, it also includes a support platform, which is provided at the lower end of the workbench. The support platform has an inverted trapezoidal structure.

[0018] As a further embodiment of this utility model, it also includes support columns, which are provided at the four corners of the workbench.

[0019] The beneficial effects of this utility model are:

[0020] An automatic PVC pipe welding mechanism is disclosed, which is controlled by a cylinder, uses a thermocouple-type heating plate for temperature control, and employs a PLC for automated control. This mechanism automates the PVC pipe welding process, automatically completing the clamping, heating, melting, and fusion of the PVC pipe, thereby significantly improving production efficiency while ensuring consistent and stable welding quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an automatic welding mechanism for PVC pipes.

[0022] Figure 2 This is another schematic diagram of the overall structure of an automatic PVC pipe welding mechanism;

[0023] Figure 3 This is a schematic diagram of the structure of the first clamping component of an automatic PVC pipe welding mechanism.

[0024] Figure 4 This is another structural schematic diagram of the first clamping component of an automatic PVC pipe welding mechanism;

[0025] Figure 5 This is a schematic diagram of the structure of the second clamping component of an automatic PVC pipe welding mechanism;

[0026] Figure 6 This is another structural schematic diagram of the second clamping component of an automatic PVC pipe welding mechanism;

[0027] Figure 7 This is a schematic diagram of the heating element of an automatic PVC pipe welding mechanism;

[0028] Figure 8 This is another structural schematic diagram of the heating component of an automatic PVC pipe welding mechanism;

[0029] Figure 9 This is another structural schematic diagram of the heating component of an automatic PVC pipe welding mechanism;

[0030] As shown in the figure:

[0031] 1-Workbench, 2-First clamping assembly, 3-Second clamping assembly, 4-Heating assembly, 5-PVC pipe;

[0032] 11-Support platform, 12-Support column;

[0033] 211-First guide rail, 212-First fixing component, 2121-First fixing post, 213-First cylinder,

[0034] 221-Side plate, 222-First lower clamping plate, 223-First upper clamping plate, 224-Second cylinder;

[0035] 311 - Second guide rail, 312 - Second fixing component, 313 - Third cylinder,

[0036] 321-Ring, 3211-Vertical rod, 3212-Connecting rod, 322-Second lower clamping plate, 323-Second upper clamping plate, 324-Fourth cylinder, 325-Third slider, 326-Fifth guide rail

[0037] 33-Support section;

[0038] 411-Third guide rail, 412-Third fixing component, 413-Fifth cylinder, 414-First slider, 415-Second slider, 416-Fourth guide rail, 417-Sixth cylinder;

[0039] 42-Heating plate. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. It should be understood that this application is not limited to the exemplary embodiments disclosed herein. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0041] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0044] An automatic welding mechanism for PVC pipe 5 includes: a workbench 1, a first clamping component 2, a second clamping component 3, and a heating component 4; the workbench 1 is divided into a first end, a middle end, and a second end in sequence, the first end is connected to the first clamping component 2, the second end is connected to the second clamping component 3, and the middle end is connected to the heating component 4.

[0045] The first clamping assembly 2 includes a first clamping part and a first moving part. The first moving part includes a first guide rail 211, a first fixing member 211 and a first cylinder 213. The first clamping part includes a side plate 221, a first lower clamping plate 222, a first upper clamping plate 223 and a second cylinder 224. The first end of the worktable 1 is provided with the first guide rail 211 and the first cylinder 213. The first cylinder 213 is connected to the first fixing member 211, and the first fixing member 211 slides on the first guide rail 211. The side plate 221 and the first lower clamping plate 222 are connected to the first fixing member 211. The upper end of the side plate 221 is connected to the first upper clamping plate 223 through the second cylinder 224. The positions of the first upper clamping plate 223 and the first lower clamping plate 222 are corresponding.

[0046] The second clamping assembly 3 includes a second clamping part and a second moving part. The second moving part includes a second guide rail 311, a second fixing member 312 and a third cylinder 313. The second clamping part includes a rod 321, a second lower clamping plate 322, a second upper clamping plate 323 and a fourth cylinder 324. The second end of the worktable 1 is provided with the second guide rail 311. The third cylinder 313 is connected to the second fixing member 312, and the second fixing member 312 slides on the second guide rail 311. The second fixing member 312 is connected to the rod 321 and the second lower clamping plate 322. The upper end of the rod 321 is connected to the second upper clamping plate 323 through the fourth cylinder 324. The second upper clamping plate 323 and the second lower clamping plate 322 are in corresponding positions.

[0047] The heating component 4 includes a heating plate 42 and a third moving part. The third moving part includes a third guide rail 411, a third fixing member 412 and a fifth cylinder 413. The third guide rail 411 is provided in the middle of the worktable 1. The fifth cylinder 413 is connected to the third fixing member 412. The third fixing member 412 slides on the third guide rail 411. The heating plate 42 is connected to the third fixing member 412.

[0048] The axes of the first guide rail 211 and the second guide rail 311 coincide, and the axis of the third guide rail 411 is perpendicular to the axis of the first guide rail 211.

[0049] The working principle is as follows: When hot-melt welding of PVC pipe 5 is required, one section of PVC pipe 5 is placed in the first lower clamping plate 222, and the other section of PVC pipe 5 is placed in the second lower clamping plate 322. The first upper clamping plate 223 and the second upper support plate move downwards respectively, clamping the two sections of PVC pipe 5 to complete the clamping action. The third moving part drives the heating element 4 to move between the two sections of PVC pipe 5. The first moving part and the second moving part move towards each other, and the two sections of PVC pipe 5 contact the heating element 4 to perform the hot-melt action. After the set time is reached, the first moving part and the second moving part move away, and the third moving part moves away. The first moving part and the second moving part move towards each other again, and the two sections of PVC pipe 5 contact each other to perform the welding action. After the predetermined static time is reached, the first upper clamping plate 223 and the second upper support plate move upwards respectively, removing the welded PVC pipe 5, realizing the automated production of the PVC pipe 5 welding process. The entire production process is controlled by PLC, with precise positioning, accurate timing, and greatly reduced labor intensity.

[0050] An automatic welding mechanism for PVC pipes 5 is disclosed, comprising cylinder-controlled action, thermocouple-type heating plate 42 for temperature control, and PLC-based automation control. This mechanism automates the PVC pipe welding process, automatically completing the clamping, heating, melting, and fusion of the PVC pipes 5, thereby significantly improving production efficiency while ensuring consistent and stable welding quality.

[0051] In this embodiment, the first, second, and third moving parts are all controlled by cylinders, and the cylinders are connected to a PLC to achieve automation. The cylinder's extension rod is connected to a fixing component, or the cylinder's extension rod is connected to the fixing component through a connector. The fixing component holds the PVC pipe 5 or places the heating plate 42 on the fixing component. Therefore, the PVC pipe 5 or the heating plate 42 moves along the corresponding guide rail trajectory.

[0052] Specifically, the first guide rail 211 and the second guide rail 311 are cylindrical guide rails; the first guide rail 211 consists of two rows, which are arranged in parallel; the lower end of the first fixing member 211 is provided with four first fixing posts 2121, each with a first through hole, which is fitted onto the first guide rail 211; the second guide rail 311 consists of two rows, which are arranged in parallel; the lower end of the second fixing member 312 is provided with four second fixing posts, each with a second through hole, which is fitted onto the second guide rail 311.

[0053] Specifically, the third guide rail 411 is an I-shaped guide rail, and there are two rows of the third guide rail 411 arranged in parallel. The lower end of the third fixing member 412 is connected to four first sliders 414, and the shape of the sliders matches the I-shaped guide rail. Because the heating plate 42 of the heating component 4 is relatively heavy, the third guide rail 411 adopts an I-shaped guide rail, which can withstand a large load and maintain stability in motion.

[0054] Specifically, the first guide rail 211, the second guide rail 311, and the third guide rail 411 are all in two rows. Since the first clamping component 2, the second clamping component 3, and the heating component 4, which need to move, are relatively large, the dual guide rails are beneficial for bearing a larger load. The dual guide rails provide better directional stability and support, ensuring that the first clamping component 2, the second clamping component 3, and the heating component 4 maintain better balance and stability during movement, reducing errors caused by vibration or offset, and maintaining higher precision.

[0055] In this embodiment, the first lower clamping plate 222 and the first upper clamping plate 223 clamp one section of the PVC pipe 5, and the second lower clamping plate 322 and the second upper clamping plate 323 clamp the other section of the PVC pipe 5. The first upper clamping plate 223 is controlled by the second cylinder 224, which is fixed to the side plate 221; the second upper clamping plate 323 is controlled by the fourth cylinder 324, which is fixed to the rod 321.

[0056] Specifically, the rod 321 includes two vertical rods 3211 and a connecting rod 3212. The two vertical rods 3211 are arranged in parallel, and the connecting rod 3212 is sleeved on the two vertical rods 3211. The connecting rod 3212 is connected to the fourth cylinder 324. Because some PVC pipes 5 are large and the second upper clamping plate 323 is farther away from the worktable 1, double vertical rods 3211 are used for fixing to ensure the stability of the fixed cylinder.

[0057] In this embodiment, the heating component 4 further includes a second slider 415, a fourth guide rail 416, and a sixth cylinder 417. The tail of the fifth cylinder 413 is connected to the second slider 415, and the sixth cylinder 417 is connected to the second slider 415. The sixth cylinder 417 drives the second slider 415 to move on the fourth guide rail 416. The heating component 4 has a long stroke and is equipped with two guide rails for movement.

[0058] In this embodiment, the second clamping part further includes a third slider 325 and a fifth guide rail 326. The second fixing member 312 is provided with the fifth guide rail 326, and a plurality of third sliders 325 are spaced apart on the fifth guide rail 326 and slide on the fifth guide rail 326. The rod 321 and the second lower clamping plate 322 are respectively provided on the third sliders 325. The second clamping assembly 3 is provided with multiple second clamping parts, which is beneficial for clamping long PVC pipes 5. The multiple second clamping parts can be flexibly set at any position on the fifth guide rail 326 through the third sliders 325. The second clamping assembly 3 also includes a support part 33, which is provided on the third sliders 325. The support part 33 is only provided with the lower second clamping plate. When clamping a long PVC pipe 5, only the end of the PVC pipe 5 to be welded needs to be clamped, and only the tail end of the PVC pipe 5 needs to be supported.

[0059] In this embodiment, the first lower clamping plate 222, the first upper clamping plate 223, the second lower clamping plate 322, and the second upper clamping plate 323 are all semi-circular ring structures, matching the circular shape of the PVC pipe 5.

[0060] In this embodiment, in order to increase the support force of the workbench 1, a support platform 11 is provided at the lower end of the workbench 1. The support platform 11 has an inverted trapezoidal structure, and support columns 12 are provided at the four corners of the workbench 1.

[0061] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0062] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic welding mechanism for PVC pipes, characterized in that, include: The worktable comprises a first clamping assembly, a second clamping assembly, and a heating assembly; the worktable is sequentially divided into a first end, a middle end, and a second end, the first end being connected to the first clamping assembly, the second end being connected to the second clamping assembly, and the middle end being connected to the heating assembly. The first clamping assembly includes a first clamping part and a first moving part. The first moving part includes a first guide rail, a first fixing member, and a first cylinder. The first clamping part includes a side plate, a first lower clamping plate, a first upper clamping plate, and a second cylinder. The first end of the worktable is provided with the first guide rail and the first cylinder. The first cylinder is connected to the first fixing member, and the first fixing member slides on the first guide rail. The side plate and the first lower clamping plate are connected to the first fixing member. The upper end of the side plate is connected to the first upper clamping plate through the second cylinder. The positions of the first upper clamping plate and the first lower clamping plate are corresponding. The second clamping assembly includes a second clamping part and a second moving part. The second moving part includes a second guide rail, a second fixing member, and a third cylinder. The second clamping part includes a rod, a second lower clamping plate, a second upper clamping plate, and a fourth cylinder. The second end of the worktable is provided with the second guide rail. The third cylinder is connected to the second fixing member, and the second fixing member slides on the second guide rail. The rod and the second lower clamping plate are connected to the second fixing member. The upper end of the rod is connected to the second upper clamping plate through the fourth cylinder. The second upper clamping plate and the second lower clamping plate are positioned correspondingly. The heating component includes a heating plate and a third moving part. The third moving part includes a third guide rail, a third fixing member, and a fifth cylinder. The third guide rail is provided at the middle of the worktable. The fifth cylinder is connected to the third fixing member, and the third fixing member slides on the third guide rail. The heating plate is connected to the third fixing member. The axes of the first guide rail and the second guide rail coincide, and the axis of the third guide rail is perpendicular to the axis of the first guide rail.

2. The automatic PVC pipe welding mechanism according to claim 1, characterized in that, The first guide rail and the second guide rail are cylindrical guide rails; the first guide rail consists of two rows arranged in parallel; the lower end of the first fixing member is provided with four first fixing posts, each with a first through hole, which is fitted onto the first guide rail; the second guide rail consists of two rows arranged in parallel; the lower end of the second fixing member is provided with four second fixing posts, each with a second through hole, which is fitted onto the second guide rail.

3. The automatic PVC pipe welding mechanism according to claim 1, characterized in that, The third guide rail is an I-shaped guide rail, and there are two rows of the third guide rails arranged in parallel. The lower end of the fixing member is connected to four first sliders, and the shape of the sliders matches the I-shaped guide rail.

4. The automatic PVC pipe welding mechanism according to claim 1, characterized in that, The rod includes two vertical rods and a connecting rod. The two vertical rods are arranged in parallel, and the connecting rod is sleeved on the two vertical rods. The connecting rod is connected to the fourth cylinder.

5. The automatic PVC pipe welding mechanism according to claim 1, characterized in that, The heating element also includes a second slider, a fourth guide rail, and a sixth cylinder. The tail of the fifth cylinder is connected to the second slider, and the sixth cylinder is connected to the second slider. The sixth cylinder drives the second slider to move on the fourth guide rail.

6. The automatic PVC pipe welding mechanism according to claim 1, characterized in that, The second clamping part further includes a third slider and a fifth guide rail. The second fixing member is provided with the fifth guide rail, and a plurality of the third sliders are spaced apart on the fifth guide rail and slide on the fifth guide rail. The rod and the second lower clamping plate are respectively provided on the third sliders.

7. The automatic PVC pipe welding mechanism according to claim 6, characterized in that, The second clamping assembly further includes a support portion disposed on the third slider.

8. The automatic PVC pipe welding mechanism according to any one of claims 1-7, characterized in that, The first lower clamping plate, the first upper clamping plate, the second lower clamping plate, and the second upper clamping plate are all semi-circular ring structures.

9. The automatic PVC pipe welding mechanism according to claim 1, characterized in that, It also includes a support platform, which is provided at the lower end of the workbench. The support platform has an inverted trapezoidal structure.

10. The automatic PVC pipe welding mechanism according to claim 9, characterized in that, It also includes support columns, which are provided at the four corners of the workbench.

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