Needled felt splicing device

Abstract

The utility model discloses a needled felt splicing device which comprises an air cylinder and a die, the air cylinder comprises a cylinder body and a piston rod, the piston rod is installed on the cylinder body, the die is connected to the end, away from the cylinder body, of the piston rod, the die comprises an upper die, a lower die and a heating piece, and the upper die and the lower die are connected and at least partially attached in a plane mode. And the heating piece is mounted between the upper mold and the lower mold and is used for heating the joint of the two needled felts. According to the needled felt splicing device, two short needled felts can be spliced into a long needled felt, and the needled felt splicing device is simple in structure, convenient to operate and uniform in splicing.

Description

Technical Field

[0001] The utility model relates to the technical field of pipelines, in particular to a needle felt splicing device. Background Art

[0002] Coated needle felt is an important raw material for CIPP pipes. Due to the limitations of raw material production equipment and the actual situation of CIPP pipe production, when a longer needle felt is needed and the required needle felt length exceeds the existing length or the maximum length that can be purchased, it is necessary to consider splicing the needle felt. In the related art, sewing is often used for splicing, but the splicing is uneven and the production efficiency is low.

[0003] Therefore, it is necessary to provide a new needle felt splicing device to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a needle felt splicing device, which can splice two needle felts with shorter lengths into a needle felt with longer length.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A needle felt splicing device is suitable for splicing two needle felts together. The needle felt splicing device comprises a cylinder and a mold. The cylinder comprises a cylinder body and a piston rod. The piston rod is installed on the cylinder body. The mold is connected to the end of the piston rod away from the cylinder body. The mold comprises an upper mold, a lower mold and a heating element. The upper mold is connected to the lower mold and at least partially flatly fits the lower mold. The heating element is installed between the upper mold and the lower mold. The heating element heats the connection between the two needle felts.

[0007] As a further improved technical solution of the utility model, the needle felt splicing device also includes a connecting piece, and the connecting piece connects the piston rod and the mold.

[0008] As a further improved technical solution of the utility model, the end of the piston rod away from the cylinder body is at least partially located in the connecting member, and the upper mold is fixedly connected to the end of the connecting member away from the piston rod.

[0009] As a further improved technical solution of the utility model, the upper mold and the lower mold are connected as a whole through a connecting assembly, and the connecting assembly includes a connecting block and connecting bolts. The connecting block is fixed to the upper mold, and the connecting bolts pass through the connecting block and are at least partially fixed to the lower mold.

[0010] As a further improved technical solution of the utility model, a Teflon high-temperature cloth is attached to a side of the lower mold away from the upper mold.

[0011] As a further improved technical solution of the utility model, a cooling channel is provided in the upper mold, both ends of the cooling channel are communicated with the outside, and both ends of the cooling channel are connected to cooling water pipes.

[0012] As a further improved technical solution of the utility model, the needle felt splicing device also includes a sliding track, and the cylinder is movably installed on the sliding track.

[0013] As a further improved technical solution of the utility model, the upper mold and the lower mold jointly form at least one circular hole, and the heating element is installed in the circular hole.

[0014] Compared with the prior art, the needle felt splicing device of the utility model has the following beneficial effects: a heating element is provided in the mold to heat and weld two needle felts to be spliced, and a cylinder that can move up and down is provided to control the mold, so as to control the distance between the heating element and the connection between the needle felt; a Teflon high temperature cloth is attached to the bottom of the lower mold and a cooling channel is provided in the upper mold to prevent the needle felt from sticking to the mold. The needle felt splicing device has a simple structure, is easy to operate, and splices evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a needle felt splicing device according to a specific embodiment of the utility model;

[0016] Figure 2 This is a schematic structural diagram of a mold according to a specific embodiment of the utility model;

[0017] Figure 3 The figure is a schematic diagram of the splicing of a needle felt according to a specific embodiment of the utility model. DETAILED DESCRIPTION

[0018] The exemplary embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. If there are several embodiments, the features of these embodiments can be combined with each other without conflict. When the description refers to the drawings, unless otherwise specified, the same numbers in different drawings represent the same or similar elements. The contents described in the following exemplary embodiments do not represent all embodiments consistent with the present invention; on the contrary, they are merely examples of devices, products and / or methods that are consistent with some aspects of the present invention and are recorded in the claims of the present invention.

[0019] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the scope of protection of the present invention. The singular forms "a", "said" or "the" used in the specification and claims of the present invention are also intended to include plural forms, unless the context clearly indicates other meanings.

[0020] It should be understood that the words used in the specification and claims of the present invention, such as "first", "second" and similar words, do not indicate any order, quantity or importance, but are only used to distinguish the names of features. Similarly, words such as "one" or "an" do not indicate a quantitative limitation, but indicate the existence of at least one. Unless otherwise specified, words such as "front", "rear", "upper", "lower" and similar words appearing in the present invention are only for the convenience of description and are not limited to a specific position or a spatial orientation. Words such as "include" or "comprise" are an open-ended expression, meaning that the elements appearing before "include" or "comprises" include the elements appearing after "include" or "comprises" and their equivalents, which does not exclude that the elements appearing before "include" or "comprises" may also include other elements.

[0021] If “several” appears in the present invention, it means two or more.

[0022] See also Figures 1 to 3 As shown, an embodiment of the utility model discloses a needle felt splicing device, which is suitable for splicing two needle felts together. The needle felt splicing device includes a cylinder 10 and a mold. The mold is installed on the cylinder 10, and the mold is provided with a heating element 40. The two needle felts to be spliced ​​are placed under the mold. The cylinder 10 controls the mold to move up and down, and the heating element 40 heats and welds the two needle felts.

[0023] See also Figure 1 As shown, the cylinder 10 includes a cylinder body 11 and a piston rod 12. The piston rod 12 is installed in the cylinder body 11, and the piston rod 12 is at least partially located in the cylinder body 11; specifically, the piston portion of the piston rod 12 is always located in the cylinder body 11, and the rod portion of the piston rod 12 extends downward from the piston portion to the outside of the cylinder body 11. The mold is fixedly connected to the end of the piston rod 12 away from the cylinder body 11. The mold includes an upper mold 20, a lower mold 30 and a heating element 40. The upper mold 20 is connected to the lower mold 30 and at least partially flatly fits. The heating element 40 is installed between the upper mold 20 and the lower mold 30. The heating element 40 heats and welds the connection between the two needle felts. This embodiment uses the cylinder 10 to control the mold to move up and down, which is simple to operate and has high precision.

[0024] See also Figure 1As shown, the needle felt splicing device of this embodiment further includes a connecting member 50, which connects the cylinder 10 and the mold; further, the connecting member 50 connects the piston rod 12 and the mold; and further, the connecting member 50 connects the piston rod 12 and the upper mold 20. Specifically, since the piston rod 12 is a relatively slender rod and the upper mold 20 is a relatively large block, in this embodiment, the end of the connecting member 50 connected to the piston rod 12 has a channel for the piston rod 12 to extend into, and the end of the piston rod 12 away from the cylinder body 11 is at least partially located in the connecting member 50, and the upper mold 20 is fixedly connected to the end of the connecting member 50 away from the piston rod 12, and the upper mold 20 and the connecting member 50 can be fixed by bolts. The setting of the connecting member 50 makes the connection between the piston rod 12 and the mold more stable, and there is no need to dig a groove on the mold or set other structures that match the piston rod 12.

[0025] See also Figure 2 As shown, the upper mold 20 and the lower mold 30 are connected as a whole through a connecting assembly. Further, the connecting assembly includes a connecting block 61 and a connecting bolt 62. The connecting block 61 is fixed to the upper mold 20. The connecting bolt 62 passes through the connecting block 61 and is at least partially fixed to the lower mold 30, thereby connecting the upper mold 20 and the lower mold 30 as a whole.

[0026] Since the coating of the CIPP pipe used for water supply needs to meet the water-resistant requirements, the coating material is generally selected as PE that meets the water-resistant requirements. Considering the performance and weldability of PE, in this embodiment, the bottom of the lower mold 30, that is, the side of the lower mold 30 away from the upper mold 20, that is, the side of the lower mold 30 close to the needle-punched felt, is affixed with Teflon high-temperature cloth, which can effectively prevent the PE material from sticking to the mold after being heated.

[0027] For further information, see Figure 1 and Figure 2 As shown, a cooling channel (not shown in the figure) is provided in the upper mold 20, both ends of the cooling channel are connected to the outside, and both ends of the cooling channel are connected to cooling water pipes 21. In other embodiments, the cooling channel may also have more than two ports connected to the outside, and each port is provided with a cooling water pipe 21. The high temperature after welding will still cause PE to adhere to the Teflon high-temperature cloth. Therefore, after welding, low-temperature water is introduced into the cooling water channel from one of the cooling water pipes 21, and flows out from the other cooling water pipes 21, so that the mold can be cooled quickly, so that the PE coating surface of the needle felt can be quickly separated from the Teflon high-temperature cloth.

[0028] See also Figure 2As shown, the upper mold 20 and the lower mold 30 are at least partially in plane contact, and the upper mold 20 and the lower mold 30 jointly form at least one circular hole, which is located at the plane contact of the upper mold 20 and the lower mold 30. In this embodiment, the circular hole occupies a semicircle in the upper mold 20 and the lower mold 30, and the heating element 40 is installed in the circular hole. This arrangement is to enable the mold to meet the requirements of rapid heating and rapid cooling at the same time.

[0029] See also Figure 1 As shown, the needle felt splicing device of this embodiment further includes a sliding track 70, and the cylinder 10 is movably mounted on the sliding track 70. Specifically, the sliding track 70 is arranged on the side or above the cylinder 10, and the cylinder 10 can move laterally along the sliding track 70, so that the seam between the two needle felts can be completely heated and welded.

[0030] It should be noted that in order to ensure the strength of the coated needle felt, the joints of the two needle felts are not allowed to be at the same length, and the joints cannot form a circle. Generally, the heads or tails of the two needle felts are beveled before welding.

[0031] When using the needle felt splicing device of this embodiment, please refer to Figure 3 As shown, needle felt A and needle felt B are two shorter needle felts. After beveling the tail of needle felt A and the head of needle felt B, the two edges of the cut edges of needle felt A and needle felt B are aligned flush, the seam is directly opposite to the bottom of the mold of the splicing device, and then a PE welding strip is covered on the seam. After the heating element 40 heats the mold, the cylinder 10 is operated to press the mold downward, so that the PE welding strip is heat-sealed and welded to needle felt A and needle felt B to obtain a longer needle felt. After welding, cooling water is introduced into the cooling channel to quickly cool down the mold to quickly separate the needle felt and the Teflon high-temperature cloth.

[0032] In summary, compared with the prior art, the needle felt splicing device of the utility model has the following advantages: a heating element 40 is provided in the mold to heat and weld two needle felts to be spliced, and a cylinder 10 that can move up and down is provided to control the mold, so as to control the distance between the heating element 40 and the connection between the needle felt; a Teflon high temperature cloth is attached to the bottom of the lower mold 30 and a cooling channel is provided in the upper mold 20 to prevent the needle felt from sticking to the mold. The needle felt splicing device has a simple structure, is easy to operate, and splices evenly.

[0033] The above implementation modes are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of this specification should be based on the technical personnel in the relevant technical field. Although this specification has described the present invention in detail with reference to the above embodiments, ordinary technical personnel in the field should understand that the technical personnel in the relevant technical field can still modify or make equivalent substitutions to the present invention, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A needle felt splicing device, suitable for splicing two needle felts together, characterized in that: The needle felt splicing device comprises a cylinder (10) and a mold, wherein the cylinder (10) comprises a cylinder body (11) and a piston rod (12), wherein the piston rod (12) is mounted on the cylinder body (11), and the mold is connected to an end of the piston rod (12) away from the cylinder body (11), and the mold comprises an upper mold (20), a lower mold (30) and a heating element (40), wherein the upper mold (20) is connected to the lower mold (30) and at least partially plane-fits with the lower mold (30), and the heating element (40) is mounted between the upper mold (20) and the lower mold (30), and the heating element (40) heats the connection between the two needle felts.

2. The needle felt splicing device according to claim 1, characterized in that: The needle felt splicing device also includes a connecting piece (50), wherein the connecting piece (50) connects the piston rod (12) and the mold.

3. The needle felt splicing device according to claim 2, characterized in that: The end of the piston rod (12) away from the cylinder body (11) is at least partially located in the connecting member (50), and the upper mold (20) is fixedly connected to the end of the connecting member (50) away from the piston rod (12).

4. The needle felt splicing device according to claim 1, characterized in that: The upper mold (20) and the lower mold (30) are connected as a whole via a connecting assembly, wherein the connecting assembly comprises a connecting block (61) and a connecting bolt (62), wherein the connecting block (61) is fixed to the upper mold (20), and the connecting bolt (62) passes through the connecting block (61) and is at least partially fixed to the lower mold (30).

5. The needle felt splicing device according to claim 1, characterized in that: A Teflon high-temperature cloth is attached to a side of the lower mold (30) away from the upper mold (20).

6. The needle felt splicing device according to claim 1, characterized in that: A cooling channel is provided in the upper mold (20), both ends of the cooling channel are in communication with the outside, and both ends of the cooling channel are connected to cooling water pipes (21).

7. The needle felt splicing device according to claim 1, characterized in that: The needle felt splicing device also includes a sliding track (70), and the cylinder (10) is movably mounted on the sliding track (70).

8. The needle felt splicing device according to claim 1, characterized in that: The upper mold (20) and the lower mold (30) jointly form at least one circular hole, and the heating element (40) is installed in the circular hole.

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