Hot melting device for PPR pipe fitting

Abstract

The utility model belongs to the technical field of hot melting devices, and discloses a hot melting device of a PPR pipe fitting, the hot melting device comprises a hot melting plate and a hot melting assembly, the hot melting assembly comprises hot melting heads arranged in pairs, each hot melting head comprises a hot melting end and a connecting end, the size of the hot melting end is matched with the diameter of the PPR pipe fitting, and the connecting end is connected with the hot melting plate. A connecting table is arranged in the connecting end, internal threads are arranged on the connecting table, hot melting grooves and connecting columns are arranged on the two sides, close to the end, of the hot melting plate, the connecting end is connected with the hot melting grooves in an inserted mode, and the connecting table is connected with the connecting columns in a threaded mode; a heating coil is arranged at the position, corresponding to the connecting column, in the hot melting plate, and the heating coil heats the hot melting head after being electrified. According to the technical scheme, the PPR pipe fitting at the wall corner can be subjected to hot melting, and the situation that the hot melting plate cannot be close to the wall corner due to the fact that the hot melting head is too far away from the end of the hot melting plate is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hot melt machines, and particularly relates to a hot melt device for PPR pipe fittings. Background Art

[0002] PPR (polypropylene random copolymer) pipe fittings are widely used in the fields of building water supply, heating ventilation and air conditioning, and industrial pipelines due to their excellent corrosion resistance, high temperature resistance, and good mechanical properties. The connection methods of PPR pipe fittings mainly include hot melt connection, threaded connection, flange connection, etc. Among them, hot melt connection is widely adopted because of its firm connection and good sealing performance. Generally, at least two groups of hot melt heads with different specifications are arranged on the existing hot melt machines to perform hot melting on pipe fittings with different diameters. The hot melt heads generally adopt a linear arrangement to improve the utilization rate of the hot melt machine. However, when hot melting the pipe fittings at the corner or in a narrow space, only the hot melt head at the end of the hot melt machine can be close to the pipe. When the diameter of the pipe does not match the size of the hot melt head, the pipe cannot be hot melted. In view of this, the present utility model is proposed. Content of the Utility Model

[0003] In order to solve the problem that the existing hot melt machine cannot hot melt the PPR pipe fittings at the corner, the present utility model provides a hot melt device for PPR pipe fittings.

[0004] In order to solve the above technical problems, the present utility model provides a hot melt device for PPR pipe fittings. The hot melt device includes a hot melt plate and a hot melt assembly. The hot melt assembly includes a pair of hot melt heads. The hot melt head includes a hot melt end and a connection end. The size of the hot melt end is adapted to the diameter of the PPR pipe fitting. A connection platform is arranged inside the connection end, and an internal thread is arranged on the connection platform. Hot melt grooves and connection columns are arranged on both sides of the hot melt plate near the end. The connection end is inserted and connected with the hot melt groove, and the connection platform is threadedly connected with the connection column. Heating coils are arranged inside the hot melt plate at positions corresponding to the connection columns. After the heating coils are powered on, they heat the hot melt heads.

[0005] In an embodiment of the present utility model, the number of the hot melt assemblies is at least two groups, and at least two groups of the hot melt assemblies are respectively located on both sides of the hot melt plate.

[0006] In an embodiment of the present utility model, three groups of the hot melt assemblies are arranged. The hot melt ends of the two hot melt heads in each group of the hot melt assemblies have the same specifications, and the connection ends of each hot melt head have the same specifications. Two pairs of slots are also formed on both sides of the hot melt plate, and the size of the slots is the same as that of the hot melt grooves.

[0007] In an embodiment of the present utility model, the hot melting device further includes a locking assembly, the locking assembly includes a biaxial motor and two gears, the biaxial motor is fixed inside the hot melting plate, the two gears are respectively located on both sides outside the hot melting plate and are fixedly connected to the biaxial motor, tooth grooves are arranged in a circumferential array on the connection ends of the hot melting heads on both sides, the hot melting heads on both sides are meshed with the two gears through the corresponding tooth grooves, the width of the tooth groove is greater than the thickness of the gear, when the biaxial motor drives the two gears to rotate, the hot melting heads on both sides are driven to rotate, and the corresponding connection platforms are driven to be threadedly connected with the corresponding connection columns.

[0008] In an embodiment of the present utility model, the locking assembly further includes a dust cover, the dust cover covers the gear and is fixedly connected to the hot melting plate.

[0009] In an embodiment of the present utility model, the thread directions on the connection columns on both sides of the hot melting plate are opposite.

[0010] In an embodiment of the present utility model, a heat insulation plate is arranged inside the hot melting plate, and the heat insulation plate is located between the heating coil and the biaxial motor to insulate the biaxial motor.

[0011] In an embodiment of the present utility model, the heat insulation plate is a ceramic heat insulation plate, and the connection column includes one of a copper connection column or an aluminum connection column.

[0012] In an embodiment of the present utility model, the hot melting device further includes a handle fixedly connected to the hot melting plate, the hot melting groove and the connection column are located at the end of the hot melting plate away from the handle, and the end of the hot melting plate away from the handle is provided with an inclined cutting chamfer and a fillet.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] By detachably connecting the hot melting head in the hot melting groove on the hot melting plate, and the hot melting groove is located at the end of the hot melting plate, a heating coil is arranged inside the hot melting plate corresponding to the position of the hot melting groove, so that after the hot melting head is inserted into the hot melting groove, the heating coil can heat the hot melting head, so that the hot melting head can perform hot melting on the PPR pipe fittings at the corner, avoiding the situation that the hot melting plate cannot be close to the corner due to the excessive distance between the hot melting head and the end of the hot melting plate, and further causing the effect that the hot melting head cannot be used to perform hot melting on the PPR pipe fittings at the corner. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of the embodiments of the present utility model, and constitute a part of the specification, and are used together with the following specific embodiments to explain the embodiments of the present utility model, but do not constitute a limitation to the embodiments of the present utility model. In the drawings:

[0016] Figure 1 is the first three-dimensional structural schematic diagram of the hot-melt device provided by the embodiment of the present utility model;

[0017] Figure 2 is the second three-dimensional structural schematic diagram of the hot-melt device provided by the embodiment of the present utility model;

[0018] Figure 3 is the partial explosion structural schematic diagram of the hot-melt device provided by the embodiment of the present utility model.

[0019] Explanation of reference numerals

[0020] 1. Hot-melt device; 11. Hot-melt plate; 12. Hot-melt head; 13. Locking assembly; 14. Handle; 111. Hot-melt groove; 112. Connecting column; 113. Heating coil; 114. Slot; 115. Heat insulation plate; 116. Bevel cut; 117. Fillet; 121. Hot-melt end; 122. Connecting end; 123. Connecting platform; 124. Tooth groove; 131. Biaxial motor; 132. Gear; 133. Dust cover. Detailed description of the specific implementation mode

[0021] The following will describe in detail the specific implementation mode of the present utility model with reference to the accompanying drawings. It should be understood that the specific implementation mode described here is only used to illustrate and explain the present utility model, and is not used to limit the present utility model.

[0022] Please refer to Figures 1 - 3 , the hot-melt device 1 of the PPR pipe fitting of the present utility model includes a hot-melt plate 11 and a hot-melt assembly. The hot-melt assembly includes a pair of hot-melt heads 12. The hot-melt head 12 includes a hot-melt end 121 and a connecting end 122. The size of the hot-melt end 121 is adapted to the diameter of the PPR pipe fitting. An internal connecting platform 123 is provided in the connecting end 122, and an internal thread is provided on the connecting platform 123. Both sides of the hot-melt plate 11 near the end are provided with hot-melt grooves 111 and connecting columns 112. The connecting end 122 is inserted and connected with the hot-melt groove 111, and the connecting platform 123 is threadedly connected with the connecting column 112. A heating coil 113 is provided in the hot-melt plate 11 at a position corresponding to the connecting column 112. After the heating coil 113 is powered on, it heats the hot-melt head 12.

[0023] By providing hot-melt grooves 111 on both sides of the hot-melt plate 11 and arranging connecting posts 112 in the hot-melt grooves 111, after the hot-melt head 12 is inserted into the hot-melt groove 111, it is threadedly connected to the connecting post 112, so that the hot-melt head 12 is fixed in the hot-melt groove 111. Since a heating coil 113 aligned with the connecting post 112 is provided inside the hot-melt plate 11, after the heating coil 113 is powered on, the connecting post 112 is heated, and the heat is transferred from the connecting post 112 to the hot-melt head 12, facilitating the use of the hot-melt head 12 to perform hot melting on PPR pipe fittings. Since the hot-melt groove 111 is located at the end of the hot-melt plate 11, after the hot-melt head 12 is connected to the hot-melt groove 111, it is located at the end position of the hot-melt plate 11, facilitating the hot-melt head 12 to perform hot melting on PPR pipe fittings at the corner.

[0024] Compared with the hot-melter in the prior art, the hot-melt head 12 of the present utility model is connected to the hot-melt groove 111 on the hot-melt plate 11 in a detachable connection manner, and the hot-melt groove 111 is located at the end of the hot-melt plate 11. A heating coil 113 is provided inside the hot-melt plate 11 corresponding to the position of the hot-melt groove 111. After the hot-melt head 12 is inserted into the hot-melt groove 111, the heating coil 113 heats the hot-melt head 12, enabling the hot-melt head 12 to perform hot melting on PPR pipe fittings at the corner, avoiding the situation that the hot-melt head 12 is too far from the end of the hot-melt plate 11, resulting in the hot-melt plate 11 being unable to approach the corner, and thus causing the inability to use the hot-melt head 12 to perform hot melting on PPR pipe fittings at the corner.

[0025] In the embodiment of the present utility model, at least two sets of hot-melt assemblies are provided, and the at least two sets of hot-melt assemblies are respectively located on both sides of the hot-melt plate 11, facilitating the operator to perform hot melting on RRP pipe fittings of different specifications through the at least two sets of hot-melt assemblies. When performing hot-melting operations on PPR pipe fittings, a hot-melt head 12 of the corresponding specification is selected according to the size of the PPR pipe fitting, and the hot-melt head 12 of the corresponding specification is inserted into the hot-melt groove 111, and the connecting platform 123 is threadedly connected to the connecting post 112 to fix the hot-melt head 12 at the end position of the hot-melt plate 11, and then the hot-melt head 12 performs hot melting on the PPR pipe fitting.

[0026] In the embodiment of the present utility model, three sets of hot-melt assemblies are provided. The hot-melt ends 121 of the two hot-melt heads 12 in each set of hot-melt assemblies have the same specification, and the connecting ends 122 of each hot-melt head 12 have the same specification. Two pairs of slots 114 are also provided on both sides of the hot-melt plate 11, and the size of the slots 114 is the same as that of the hot-melt grooves 111.

[0027] By setting the hot-melt components into three groups and arranging two pairs of slots 114 on both sides of the hot-melt plate 11, two of the hot-melt component groups are inserted and connected with the two pairs of slots 114, and one hot-melt component group is inserted and connected with the hot-melt groove 111, so that the three hot-melt component groups are fixed on the hot-melt plate 11, and the hot-melt component group located in the hot-melt groove 111 can be heated under the action of the heating coil 113, thereby facilitating the hot melting of the PPR pipe fittings at the corner by this hot-melt component group. The two hot-melt component groups located in the slots 114 are respectively inserted and connected with the slots 114. When hot melting PPR pipe fittings of different sizes, the hot-melt component in the hot-melt groove 111 can be taken out, and the hot-melt component in the slot 114 can be taken out and inserted into the hot-melt groove 111 to adjust the hot-melt components of different specifications to hot melt PPR pipe fittings of different specifications, improving the use flexibility of the hot-melt device 1.

[0028] In the embodiment of the present utility model, the hot-melt device 1 further includes a locking assembly 13. The locking assembly 13 includes a double-shaft motor 131 and two gears 132. The double-shaft motor 131 is fixed inside the hot-melt plate 11. The two gears 132 are respectively located on both sides outside the hot-melt plate 11 and are fixedly connected with the double-shaft motor 131. Tooth grooves 124 are arranged in a circumferential array on the connection ends 122 of the two hot-melt heads 12 on both sides. The two hot-melt heads 12 on both sides are meshed with the two gears 132 on both sides through the corresponding tooth grooves 124. The width of the tooth groove 124 is greater than the thickness of the gear 132. When the double-shaft motor 131 drives the two gears 132 to rotate, it drives the two hot-melt heads 12 on both sides to rotate, and drives the corresponding connection platforms 123 to be threadedly connected with the corresponding connection columns 112.

[0029] When using the locking assembly 13 to lock the hot-melt heads 12, an operator can first insert the two hot-melt heads 12 into the hot-melt grooves 111 on both sides of the hot-melt plate 11 respectively, and make the tooth grooves 124 on the two hot-melt heads 12 mesh with the two gears 132 on both sides respectively. Subsequently, control the double-shaft to rotate and drive the two gears 132 on both sides to rotate simultaneously, thereby driving the two hot-melt heads 12 on both sides to rotate, so that the connection platforms 123 on the two hot-melt heads 12 are threadedly connected with the connection columns 112 on both sides, so that the two hot-melt heads 12 are fixed on both sides of the hot-melt plate 11, facilitating the operator to use the hot-melt device 1 to hot melt the PPR pipe fittings at the corner and preventing the hot-melt heads 12 from falling off during the hot-melting process.

[0030] Similarly, when replacing the hot melt head 12, the dual-axis motor 131 can be controlled to rotate in the reverse direction, so as to drive the gears 132 on both sides to rotate in the reverse direction and screw out the two hot melt heads 12 from the connecting posts 112. Subsequently, the operator inserts the hot melt head 12 of the required specification into the hot melt plug, and then controls the dual-axis motor 131 to rotate, so that the gears 132 on both sides rotate and tighten the hot melt head 12 on the connecting post 112. The operation of removing the hot melt head 12 from the hot melt groove 111 does not require the operator to contact the hot melt head 12, avoiding the situation of high-temperature scalding when the operator removes the hot melt head 12.

[0031] In the above embodiment, the thread directions on the connecting posts 112 on both sides of the hot melt plate 11 are opposite. Thus, when the dual-axis motor 131 drives the two gears 132 to rotate in the same direction, it drives the hot melt heads 12 on both sides to rotate in the same direction, and finally the two hot melt heads 12 are respectively tightened on the connecting posts 112 on both sides.

[0032] In the embodiment of the present utility model, the locking assembly 13 further includes a dust-proof cover 133. The dust-proof cover 133 covers the gear 132 and is fixedly connected to the hot melt plate 11, so as to play a dust-proof role for the gear 132 under the action of the dust-proof cover 133, avoiding dust entering the gear 132 and affecting the normal rotation of the gear 132.

[0033] In the embodiment of the present utility model, a heat insulation plate 115 is arranged inside the hot melt plate 11. The heat insulation plate 115 is located between the heating coil 113 and the dual-axis motor 131 to insulate the dual-axis motor 131, so as to insulate the dual-axis motor 131 under the action of the heat insulation plate 115, avoiding the high temperature generated by the heating coil 113 from affecting the normal operation of the dual-axis motor 131.

[0034] In the above embodiment, the heat insulation plate 115 is a ceramic heat insulation plate 115 to enhance the heat insulation effect of the heat insulation plate 115 on the dual-axis motor 131. The connecting post 112 includes one of a copper connecting post 112 or an aluminum connecting post 112 to improve the thermal conductivity of the connecting post 112, and further improve the heating efficiency of the hot melt head 12, facilitating the operator to perform hot melting on PPR pipe fittings.

[0035] In the embodiment of the present utility model, the hot melt device 1 further includes a handle 14 fixedly connected to the hot melt plate 11, so as to facilitate the operator to hold the handle 14 to drive the hot melt device 1 to perform hot melting operations on PPR pipe fittings. The hot melt groove 111 and the connecting post 112 are located at the end of the hot melt plate 11 away from the handle 14, and the end of the hot melt plate 11 away from the handle 14 is provided with an inclined cutting chamfer 116 and a rounded corner 117 to reduce the size of the end of the hot melt plate 11, facilitating the hot melt head 12 inserted on the hot melt groove 111 to perform hot melting on the PPR pipe fitting at the corner, preventing the size of the hot melt plate 11 from being too large and causing the hot melt head 12 to be unable to approach the PPR pipe fitting.

[0036] In the present utility model, unless otherwise clearly stipulated and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.

[0037] The preferred embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited thereto. Within the scope of the technical concept of the present utility model, various simple modifications can be made to the technical solutions of the present utility model, including the combination of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present utility model will not separately describe various possible combination methods. However, these simple modifications and combinations should also be regarded as the content disclosed by the present utility model and all fall within the protection scope of the present utility model.

[0038] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A hot melting device for PPR pipe fittings, characterized in that, The hot-melting device includes a hot-melting plate and a hot-melting component. The hot-melting component includes a pair of hot-melting heads. Each hot-melting head includes a hot-melting end and a connecting end. The size of the hot-melting end is adapted to the diameter of the PPR pipe fitting. A connecting platform is provided inside the connecting end, and an internal thread is provided on the connecting platform. On both sides of the hot-melting plate near the end, a hot-melting groove and a connecting post are provided. The connecting end is inserted and connected to the hot-melting groove, and the connecting platform is threadedly connected to the connecting post. A heating coil is provided inside the hot-melting plate at a position corresponding to the connecting post. After the heating coil is powered on, it heats the hot-melting head.

2. The hot melting device for PPR pipe fittings according to claim 1, characterized in that, The number of the hot-melting components is at least two groups, and at least two groups of the hot-melting components are respectively located on both sides of the hot-melting plate.

3. The hot melting device for PPR pipe fittings according to claim 2, characterized in that, There are three groups of the hot-melting components. The hot-melting ends of the two hot-melting heads in each group of the hot-melting components have the same specification, and the connecting ends of each hot-melting head have the same specification. Two pairs of slots are also provided on both sides of the hot-melting plate, and the size of the slots is the same as that of the hot-melting grooves.

4. The hot melting device for PPR pipe fittings according to claim 1, characterized in that, The hot-melting device further includes a locking component. The locking component includes a double-shaft motor and two gears. The double-shaft motor is fixed inside the hot-melting plate. The two gears are respectively located on both sides outside the hot-melting plate and are fixedly connected to the double-shaft motor. Tooth grooves are arranged in a circumferential direction array on the connecting ends of the hot-melting heads on both sides. The hot-melting heads on both sides are meshed with the gears on both sides through the corresponding tooth grooves. The width of the tooth groove is greater than the thickness of the gear. When the double-shaft motor drives the two gears to rotate, it drives the hot-melting heads on both sides to rotate, and drives the corresponding connecting platform to be threadedly connected to the corresponding connecting post.

5. The hot melt device for PPR pipe fittings according to claim 4, characterized in that, The locking component further includes a dust-proof cover. The dust-proof cover covers the gears and is fixedly connected to the hot-melting plate.

6. The hot melting device for PPR pipe fittings according to claim 4, characterized in that, The thread directions on the connecting posts on both sides of the hot-melting plate are opposite.

7. The hot melting device for PPR pipe fittings according to claim 4, characterized in that, An insulating plate is provided inside the hot-melting plate. The insulating plate is located between the heating coil and the double-shaft motor to insulate the double-shaft motor.

8. The hot melting device for PPR pipe fittings according to claim 7, characterized in that, The insulating plate is a ceramic insulating plate, and the connecting post includes one of a copper connecting post or an aluminum connecting post.

9. The hot melt device for PPR pipe fittings according to claim 1, characterized in that, The hot-melting device further includes a handle fixedly connected to the hot-melting plate. The hot-melting groove and the connecting post are located at the end of the hot-melting plate away from the handle, and the end of the hot-melting plate away from the handle is provided with an inclined cutting chamfer and a fillet.

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