A hot melt joining apparatus for PE pipe fittings

Abstract

This utility model provides a hot-melt connection device for PE pipe fittings, belonging to the field of plastic processing equipment manufacturing. It includes a base plate with a clamping mechanism on its top. The clamping mechanism includes a slide rail, which is disposed on the inner wall of the base plate. A placement frame is slidably mounted on the circumferential surface of the slide rail, and a fixed end of a servo motor is fixedly mounted on the surface of the placement frame. By placing two PE pipe fittings to be connected on the left and right placement wheels respectively, and then the rollers contact the PE pipe fittings, this method can clamp PE pipe fittings of different radii. Traditional hot-melt equipment, if it can only clamp a fixed diameter, requires multiple sets of special clamps for different pipe diameters, necessitating repeated disassembly and replacement of clamps during operation. The clamping mechanism significantly shortens the preparation time for changing specifications, lowers the skill threshold for operators, and reduces operational errors caused by improper clamp installation.

Description

Technical Field

[0001] This utility model relates to the field of manufacturing special equipment for plastic processing, and more specifically, to a hot melt connection device for PE pipe fittings. Background Technology

[0002] This equipment is a special connection tool designed specifically for polyethylene (PE) pipe fittings. Its core is to use a process of heating and melting, precise docking, and pressurizing to fuse the connection ends of the PE pipe fittings. After melting at high temperature, they are tightly bonded together, ultimately forming a sealed interface with a strength equivalent to that of the pipe body. It is a key piece of equipment for the installation and maintenance of PE pipeline systems (because PE material cannot be welded, hot fusion is the main connection method).

[0003] A search revealed that Chinese patent CN217927737U discloses "A PE hot-melt pipe fitting for a steel-plastic connector," which solves the problem that when manually bonding two molten end faces together, the hand cannot maintain stability for a long time, leading to skewness of the bonded end faces and poor pipe bonding effect. It includes a connector and a pipe fitting. The connector has symmetrical first grooves on both sides, and a connecting component is slidably installed in the first grooves. By providing a first support plate, a second support plate, and a third support plate, reasonable support can be achieved for the connector and pipe fitting. By providing a connecting rod, a movable rod, and a limiting groove, the relative position of the connector and pipe fitting can be limited. That is, when the heated end faces are moved laterally for bonding, the positional displacement of the connector and pipe fitting can be effectively avoided, which is beneficial to the hot-melt bonding of the connector and pipe fitting. However, the following defects still exist:

[0004] (1) In actual construction, the radius of pipe fittings often changes dynamically with demand. If the equipment cannot be compatible with different radii, it will cause jamming during on-site operation, forcing the use of non-standard connection methods, leaving safety hazards.

[0005] If the outer wall of the joint cannot be cleaned before the heat fusion connection of PE pipe fittings, the clean interface prerequisite for the heat fusion connection will be directly destroyed, resulting in a significant decrease in connection quality, reliability, and durability. Therefore, a heat fusion connection device for PE pipe fittings is proposed. Utility Model Content

[0006] The purpose of this utility model is to address the problem that in actual construction, the radius of pipe fittings often changes dynamically with demand. If the equipment cannot be compatible with different radii, it will cause jamming during on-site operations, forcing the use of non-standard connection methods and leaving safety hazards.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0008] The present invention is as follows: a hot-melt connection device for PE pipe fittings, comprising a base plate, a clamping mechanism on the top of the base plate, the clamping mechanism including a slide rail, the slide rail being disposed on the inner wall of the base plate, a placement frame slidably mounted on the circumferential surface of the slide rail, a fixed end of a servo motor fixedly mounted on the surface of the placement frame, a drive shaft rotatably mounted on the surface of the placement frame, a reciprocating screw threadedly mounted on the inner wall of the drive shaft, a connecting frame fixedly mounted on the bottom of the reciprocating screw, a roller rotatably mounted on the inner wall of the connecting frame, and a placement wheel rotatably mounted on the surface of the placement frame.

[0009] As a preferred technical solution of this utility model, the number of each of the placement frame, servo motor, drive shaft, reciprocating lead screw and connecting frame is set to two, and they are symmetrical to each other along the vertical central axis of the base plate. The drive shaft and the output end of the servo motor are connected by belt drive.

[0010] As a preferred technical solution of this utility model, the number of rollers is set to four, in pairs, and symmetrical to each other along the vertical central axis of the base plate; the number of placement wheels is set to eight, in groups of four, and symmetrical to each other along the vertical central axis of the base plate.

[0011] As a preferred technical solution of this utility model, a control box is provided on the top of the base plate, a slide rod is provided on the front side of the control box, a sliding frame is slidably installed on the circumferential surface of the slide rod, and a hot melt machine is fixedly installed on the surface of the sliding frame.

[0012] As a preferred technical solution of this utility model, the hot melt machine is electrically connected to the control box, and the number of the slide rod and the slide frame is set to two, which are symmetrical to each other along the vertical central axis of the control box.

[0013] As a preferred technical solution of this utility model, a cleaning mechanism is provided on the top of the base plate. The cleaning mechanism includes a fixing frame, which is fixedly installed on the top of the base plate. A collection groove is provided on the surface of the base plate.

[0014] As a preferred technical solution of this utility model, a round rod is slidably installed on the inner wall of the fixing frame, a limiting piece is fixedly installed on the surface of the round rod away from the collection tank, a fixing plate is fixedly installed on the surface of the round rod near the collection tank, the surface of the fixing plate near the placement rack is set as an inclined surface, a No. 1 spring is provided between the fixing plate and the fixing frame, and a cleaning brush is provided on the surface of the fixing plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. By setting up a clamping mechanism, the two PE pipe fittings to be connected are placed on the left and right placement wheels respectively, and then the rollers contact the PE pipe fittings. This method can clamp PE pipe fittings of different radii. Traditional hot melt equipment can only clamp fixed diameters, and multiple sets of special clamps are required for different pipe diameters. During operation, the clamps need to be repeatedly disassembled and replaced. The clamping mechanism greatly shortens the preparation time for changing specifications, lowers the skill threshold for operators, and reduces operational errors caused by improper clamp installation. After the PE pipe fittings on the left and right sides are clamped, the hot melt machine is moved to the designated position, and the PE pipe fittings are placed opposite each other to insert into the heating pipe of the hot melt machine. After the hot melt time is over, the hot melt machine is retracted to allow the PE pipe fittings on both sides to be connected.

[0017] 2. Through the design of the cleaning mechanism, after the required connection point of the PE pipe fitting extends beyond the placement rack, the outer wall of the PE pipe fitting will contact the inclined surface of the fixing plate, causing the fixing plate to move under force. The movement of the fixing plate will compress the No. 1 spring and drive the round rod to move. During the movement of the round rod, the movement distance of the round rod is limited by the limiting plate. After the PE pipe fittings on the left and right sides are clamped, the PE pipe fittings are manually rotated to make the outer wall of the PE pipe fittings contact the cleaning brush, so that the impurities on the outer wall of the PE pipe fittings are cleaned into the collection tank. The outer wall of the PE pipe fittings will form an oxide layer when exposed to air for a long time. This oxide layer can be effectively removed by physical friction, promoting the uniform melting of PE material and strengthening the interface bonding. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of the heat fusion connection equipment for PE pipe fittings provided by this utility model;

[0019] Figure 2 A schematic diagram showing the position and structure of the hot melt machine and clamping mechanism in the hot melt connection equipment for PE pipe fittings provided by this utility model;

[0020] Figure 3 A schematic diagram of the clamping mechanism structure of the hot-melt connection equipment for PE pipe fittings provided by this utility model;

[0021] Figure 4 A schematic diagram of the cleaning mechanism position structure of the heat fusion connection equipment for PE pipe fittings provided by this utility model;

[0022] Figure 5 The present invention provides a heat fusion connection device for PE pipe fittings. Figure 4 Enlarged schematic diagram of part A in the middle.

[0023] The diagram shows: 1. Base plate; 2. Clamping mechanism; 20. Slide rail; 21. Placement frame; 22. Servo motor; 23. Drive shaft; 24. Reciprocating lead screw; 25. Connecting frame; 26. Roller; 27. Placement wheel; 3. Control box; 4. Slide rod; 5. Sliding frame; 6. Hot melt machine; 7. Cleaning mechanism; 70. Fixing frame; 71. Collection trough; 72. Round rod; 73. Limiting plate; 74. Spring No. 1; 75. Fixing plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0025] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] like Figures 1-3 As shown, this embodiment proposes a hot-melt connection device for PE pipe fittings, including a base plate 1. A clamping mechanism 2 is provided on the top of the base plate 1. The clamping mechanism 2 includes a slide rail 20, which is disposed on the inner wall of the base plate 1. A placement frame 21 is slidably mounted on the circumferential surface of the slide rail 20. The fixed end of a servo motor 22 is fixedly mounted on the surface of the placement frame 21. A drive shaft 23 is rotatably mounted on the surface of the placement frame 21. A reciprocating screw 24 is threaded on the inner wall of the drive shaft 23. A connecting frame 25 is fixedly mounted on the bottom of the reciprocating screw 24. A roller 26 is rotatably mounted on the inner wall of the connecting frame 25. A placement wheel 27 is rotatably mounted on the surface of the placement frame 21. In this way, PE pipe fittings of different radii can be clamped. If traditional hot-melt equipment can only clamp a fixed diameter, multiple sets of special clamps are required for different pipe diameters. During operation, the clamps need to be repeatedly disassembled and replaced. The clamping mechanism 2 greatly shortens the preparation time for changing specifications.

[0029] like Figures 1-3As shown, in a preferred embodiment, based on the above method, the number of each of the placement frame 21, servo motor 22, drive shaft 23, reciprocating lead screw 24 and connecting frame 25 is set to two, and they are symmetrical to each other along the vertical central axis of the base plate 1. The output end of the drive shaft 23 and the servo motor 22 are connected by belt drive, without further additions.

[0030] like Figures 1-3 As shown, in a preferred embodiment, based on the above method, the number of rollers 26 is further set to four, in pairs, and symmetrical to each other along the vertical central axis of the base plate 1. The number of placement wheels 27 is set to eight, in groups of four, and symmetrical to each other along the vertical central axis of the base plate 1. No further additions are made.

[0031] like Figure 1 and Figure 2 As shown, in a preferred embodiment, based on the above method, a control box 3 is further provided on the top of the base plate 1, a slide rod 4 is provided on the front side of the control box 3, a slide frame 5 is slidably installed on the circumferential surface of the slide rod 4, and a hot melt machine 6 is fixedly installed on the surface of the slide frame 5. After the PE pipe fittings on the left and right sides are clamped, the hot melt machine 6 is moved to the designated position, and the PE pipe fittings are inserted into the heating tube of the hot melt machine 6 by moving them relative to each other. After the hot melt time is over, the hot melt machine 6 is retracted to connect the PE pipe fittings on both sides.

[0032] like Figure 1 and Figure 2 As shown, in a preferred embodiment, based on the above method, the hot melt machine 6 is further electrically connected to the control box 3, and the number of slide rods 4 and slide frames 5 is set to two, and they are symmetrical to each other along the vertical central axis of the control box 3, without further additions.

[0033] like Figure 4 and Figure 5 As shown, in a preferred embodiment, based on the above method, a cleaning mechanism 7 is further provided on the top of the base plate 1. The cleaning mechanism 7 includes a fixing frame 70, which is fixedly installed on the top of the base plate 1. A collection groove 71 is opened on the surface of the base plate 1. After the PE pipe fittings on the left and right sides are clamped, the PE pipe fittings are manually rotated so that the outer wall of the PE pipe fittings comes into contact with the cleaning brush, so that the impurities on the outer wall of the PE pipe fittings are cleaned into the collection groove 71.

[0034] like Figure 4 and Figure 5As shown, in a preferred embodiment, based on the above method, a round rod 72 is slidably installed on the inner wall of the fixing frame 70. A limiting piece 73 is fixedly installed on the surface of the round rod 72 away from the collection tank 71. A fixing plate 75 is fixedly installed on the surface of the round rod 72 near the collection tank 71. The surface of the fixing plate 75 near the placement rack 21 is set as an inclined surface. A first spring 74 is provided between the fixing plate 75 and the fixing frame 70. A cleaning brush is provided on the surface of the fixing plate 75. When the outer wall of the PE pipe is exposed to air for a long time, an oxide layer will form. This oxide layer can be effectively removed by physical friction, promoting the uniform melting of PE material and strengthening the interface bonding.

[0035] Specifically, the heat fusion connection equipment for PE pipe fittings operates as follows: Two PE pipe fittings to be connected are placed on the left and right placement wheels 27 respectively. Then, the output of the servo motor 22 drives the belt, causing the drive shaft 23 to rotate. The rotation of the drive shaft 23 causes the reciprocating screw 24 to move linearly. As the reciprocating screw 24 moves downwards, it drives the connecting frame 25 to move. The movement of the connecting frame 25 then drives the roller 26 to move until the roller 26 contacts the PE pipe fitting. At this point, the position of the PE pipe fitting is fixed. This method allows for clamping PE pipe fittings of different radii. Traditional... If the hot melt equipment can only clamp a fixed diameter, multiple sets of special clamps are required for different pipe diameters. During operation, the clamps need to be repeatedly disassembled and replaced. The clamping mechanism 2 greatly shortens the preparation time for changing specifications, lowers the skill threshold for operators, and reduces operational errors caused by improper clamp installation. After the PE pipe fittings on both sides are clamped, the hot melt machine 6 is moved to the designated position. The PE pipe fittings are then inserted into the heating pipe of the hot melt machine 6 by moving them relative to each other. After the hot melt time is over, the hot melt machine 6 is retracted to connect the PE pipe fittings on both sides.

[0036] After the PE pipe fitting extends beyond the placement rack 21 at the required connection point, the outer wall of the PE pipe fitting will contact the inclined surface of the fixing plate 75, causing the fixing plate 75 to move under force. The movement of the fixing plate 75 will compress the first spring 74 and drive the round rod 72 to move. When the round rod 72 moves, the movement distance of the round rod 72 is limited by the limiting piece 73. After the PE pipe fittings on the left and right sides are clamped, the PE pipe fittings are manually rotated so that the outer wall of the PE pipe fittings contacts the cleaning brush, so that the impurities on the outer wall of the PE pipe fittings are cleaned into the collection tank 71. The outer wall of the PE pipe fittings will form an oxide layer when exposed to air for a long time. This oxide layer can be effectively removed by physical friction, promoting the uniform melting of PE material and strengthening the interface bonding.

[0037] All technical features in this embodiment can be freely combined according to actual needs.

[0038] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A heat fusion connection device for PE pipe fittings, comprising a base plate (1), characterized in that, The top of the base plate (1) is provided with a clamping mechanism (2); The clamping mechanism (2) includes a slide rail (20), which is set on the inner wall of the base plate (1). A placement frame (21) is slidably installed on the circumferential surface of the slide rail (20). The fixed end of a servo motor (22) is fixedly installed on the surface of the placement frame (21). A drive shaft (23) is rotatably installed on the surface of the placement frame (21). A reciprocating screw (24) is threaded on the inner wall of the drive shaft (23). A connecting frame (25) is fixedly installed at the bottom of the reciprocating screw (24). A roller (26) is rotatably installed on the inner wall of the connecting frame (25). A placement wheel (27) is rotatably installed on the surface of the placement frame (21).

2. The heat fusion connection equipment for PE pipe fittings according to claim 1, characterized in that, The number of each of the placement frame (21), servo motor (22), drive shaft (23), reciprocating lead screw (24) and connecting frame (25) is set to two, and they are symmetrical to each other along the vertical central axis of the base plate (1). The output end of the drive shaft (23) and the servo motor (22) are connected by belt drive.

3. The heat fusion connection equipment for PE pipe fittings according to claim 1, characterized in that, The number of rollers (26) is set to four, in pairs, and symmetrical to each other along the vertical central axis of the base plate (1). The number of placement wheels (27) is set to eight, in groups of four, and symmetrical to each other along the vertical central axis of the base plate (1).

4. The heat fusion connection equipment for PE pipe fittings according to claim 1, characterized in that, A control box (3) is provided on the top of the base plate (1), a slide rod (4) is provided on the front side of the control box (3), a sliding frame (5) is slidably installed on the circumferential surface of the slide rod (4), and a hot melt machine (6) is fixedly installed on the surface of the sliding frame (5).

5. A heat fusion connection device for PE pipe fittings according to claim 4, characterized in that, The hot melt machine (6) is electrically connected to the control box (3), and the number of the slide rod (4) and the sliding frame (5) is set to two, and they are symmetrical to each other along the vertical central axis of the control box (3).

6. The heat fusion connection equipment for PE pipe fittings according to claim 1, characterized in that, A cleaning mechanism (7) is provided on the top of the base plate (1). The cleaning mechanism (7) includes a fixing frame (70), which is fixedly installed on the top of the base plate (1). A collection groove (71) is provided on the surface of the base plate (1).

7. A heat fusion connection device for PE pipe fittings according to claim 6, characterized in that, A round rod (72) is slidably installed on the inner wall of the fixing frame (70). A limiting piece (73) is fixedly installed on the surface of the round rod (72) away from the collection tank (71). A fixing plate (75) is fixedly installed on the surface of the round rod (72) near the collection tank (71). The surface of the fixing plate (75) near the placement rack (21) is set as an inclined surface. A No. 1 spring (74) is provided between the fixing plate (75) and the fixing frame (70). A cleaning brush is provided on the surface of the fixing plate (75).

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