A textured braided heat shrink sleeve port expander

Abstract

The utility model provides a kind of net weave braiding heat shrinkable sleeve pipe orifice expansion machine, it is related to heat shrinkable sleeve pipe processing technical field, comprising: conveying main body, conveying main body is composed by stable frame, driving part and conveying belt, one side of conveying main body is equipped with a first stable plate, the side of first stable plate is installed a support frame, the upper end position of support frame is installed a support plate, the side of support plate is installed a first electric motor, the driving shaft of first electric motor is installed a gear outside.The gear meshing transmission of cooperation first electric motor can accurately adjust positioning mechanism height, and the positioning needs of different diameter sleeve are adapted;Positioning plate arc clamping groove is inlaid with sleeve outer circle, in combination with the flexible elasticity of positioning rod outside support spring, realize flexible clamping to sleeve, both ensure that sleeve positioning is stable, and prevent that sleeve is deformed due to excessive clamping force.

Description

Technical Field

[0001] This utility model relates to the field of heat shrink tubing processing technology, and in particular to a mesh braided heat shrink tubing nozzle expansion machine. Background Technology

[0002] In the processing and production of braided heat shrink tubing, tube end expansion is a crucial process to ensure the suitability of subsequent assembly. Currently, tube end expansion machines are used to achieve this purpose. However, existing tube end expansion machines have many shortcomings in their structural design, making it difficult to meet the processing needs of tubing of different specifications and the protection requirements of the braided structure. Specific problems are as follows: The positioning mechanism of existing expansion machines mostly adopts rigid clamping. For sleeves with a braided structure, excessive clamping force can easily squeeze the braid, causing the braid to break or deform, reducing the mechanical strength and insulation performance of the sleeve. When the clamping force is too small, it can easily cause the sleeve to shift, resulting in uneven expansion of the tube opening and affecting subsequent assembly. The reaming mechanism is mostly driven by a cylinder to achieve linear motion. The cylinder thrust is easily affected by air pressure fluctuations, resulting in uneven reaming speed. When the instantaneous impact force is too large, the braided mesh at the sleeve opening is prone to breakage due to stress concentration. In addition, the existing reaming nozzles are mostly single-size straight cylindrical structures, which are directly inserted into the sleeve opening during expansion. Especially for braided mesh sleeves made of harder materials, the mesh breakage rate is high, and the product qualification rate is difficult to guarantee. The flaring head is usually securely connected to the reaming mechanism by bolts or clips. In addition, the flaring head is basically an independent installation structure. Therefore, when it is necessary to process sleeves of different diameter specifications, the changeover process takes a long time, which affects the production efficiency of sleeve opening expansion. Utility Model Content

[0003] This utility model relates to an expansion machine for the nozzle of a braided heat shrink tubing. The positioning mechanism of this expansion machine, through gear engagement with a first electric motor, can precisely adjust the height to adapt to tubing of different diameters. Combined with the arc groove of the positioning plate and the supporting spring, it achieves flexible clamping, ensuring stable positioning while preventing tubing deformation. In the reaming mechanism, a threaded rod converts the rotational motion of the second electric motor into a smooth linear motion of the moving plate, allowing for adjustable reaming speed to adapt to different materials. A conical reaming head disperses the reaming force, preventing breakage of the braided tubing and ensuring processing quality. Furthermore, positioning posts distributed at 90-degree angles on the second stabilizing plate can accommodate different reaming heads, allowing for quick switching by lifting and rotating. Magnetic adsorption blocks enable tool-free assembly and disassembly of the reaming heads, significantly improving the efficiency of changing between different tubing specifications. Overall, it meets the requirements for precise, braid-protecting, and efficient processing.

[0004] This utility model provides a braided heat shrink tubing nozzle expansion machine, specifically comprising: a conveying body, which is composed of a stabilizing frame, a driving component, and a conveyor belt; a first stabilizing plate is provided on one side of the conveying body; a support frame is installed on one side of the first stabilizing plate; a support plate is installed at the upper end of the support frame; a first electric motor is installed on one side of the support plate; a gear is installed on the outer side of the drive shaft of the first electric motor; a guide plate is installed on the inner side of the upper part of the support frame; a baffle is provided on one side of the guide plate; a second electric motor is installed on the outer side of the baffle; and a rotatably connected threaded rod is installed on the inner side of the guide plate; one side of the threaded rod is securely connected to the drive shaft of the second electric motor.

[0005] Furthermore, a stabilizing groove corresponding to the guide plate is opened at the upper end of the support frame, and the guide plate is installed inside the stabilizing groove.

[0006] Furthermore, a sliding groove is formed on the inner side of the guide plate, a slidingly connected movable plate is installed on the top of the guide plate, and a sliding block is provided at the bottom of the movable plate. The sliding block extends into the interior of the sliding groove. Both the sliding block and the sliding groove are T-shaped structures. A threaded hole is formed in the middle of the sliding block. The threaded hole and the threaded rod correspond to each other, and the threaded rod passes through the interior of the threaded hole.

[0007] Furthermore, a sliding hole is provided on one side of the support frame. The sliding hole has a rectangular structure, and a rack is inserted inside the sliding hole. The gear mounted on the first electric motor meshes with the rack.

[0008] Furthermore, two sliding holes are formed at the bottom of the rack. The sliding holes are cylindrical, and a positioning rod is inserted into each sliding hole. A positioning plate is provided at the bottom of the positioning rod, and a clamping groove is formed at the bottom of the positioning plate. The clamping groove is arc-shaped. A support spring is installed on the outer side of the positioning rod, and the support spring is located between the rack and the positioning plate. A retaining spring is installed above the positioning rod. The first electric motor, rack, positioning plate, and positioning rod cooperate with each other to form a positioning mechanism.

[0009] Furthermore, a vertical positioning block is provided at the upper end of the movable plate. The positioning block has a rectangular structure. A vertical extension rod is provided above the positioning block. The extension rod has a cylindrical structure. A second stabilizing plate is installed above the movable plate. A sliding hole corresponding to the positioning block is opened in the middle of the second stabilizing plate. The positioning block extends into the interior of the sliding hole.

[0010] Furthermore, an annular groove is formed at the upper position of the extension rod, a retaining spring is installed on the inner side of the annular groove, and a support spring is installed on the outer side of the extension rod. The support spring is located between the second stabilizing plate and the retaining spring.

[0011] Furthermore, the second stabilizing plate has two positioning posts distributed at ninety degrees on its side. A reamer is installed on the outer side of the positioning posts. One side of the reamer is a conical structure. A magnetic adsorption block is provided on one side of the positioning posts. The magnetic adsorption block is a rectangular structure. A mounting groove corresponding to the magnetic adsorption block is opened on the inner side of the reamer. The magnetic adsorption block extends into the interior of the mounting groove. The second electric motor, threaded rod, moving plate, positioning block, extension rod, second stabilizing plate, positioning posts, and reamer cooperate with each other to form a hole-expanding mechanism.

[0012] This utility model provides a braided heat shrink tubing orifice expansion machine, which has the following beneficial effects: This utility model features a positioning mechanism that flexibly clamps the sleeve. Combined with the gear meshing transmission of the first electric motor, the height of the positioning mechanism can be precisely adjusted to meet the positioning requirements of sleeves with different diameters. The arc-shaped clamping groove of the positioning plate fits against the outer circle of the sleeve, and combined with the flexible elasticity of the support spring on the outside of the positioning rod, it achieves flexible clamping of the sleeve, ensuring stable positioning of the sleeve while preventing excessive clamping force from causing deformation of the sleeve.

[0013] This utility model includes a hole-expanding mechanism to expand the opening of the braided heat shrink tubing. The threaded rod is threadedly connected to the sliding block, which converts the rotational motion of the second electric motor into the smooth linear motion of the moving plate. The hole-expanding speed can be controlled by adjusting the motor speed to adapt to the expansion needs of tubing of different materials. The conical structure of the expanding head can gradually disperse the expansion force, preventing the braided tubing from breaking due to instantaneous force, thus ensuring the quality of the tubing after hole expansion.

[0014] In addition, the two positioning posts distributed at 90 degrees on the side of the second stabilizing plate can be used to install different models of flaring heads. By lifting the second stabilizing plate upward and rotating it 90 degrees, the spare flaring head can be switched, realizing quick changeover. The rectangular magnetic adsorption block of the positioning post cooperates with the mounting groove of the flaring head, and the flaring head is quickly fixed by magnetic force. When changing, you only need to pull the flaring head outward to overcome the magnetic force to remove it. No tools are needed, making the operation convenient and greatly improving the changeover efficiency when processing sleeves of different specifications. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0016] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0017] In the attached diagram: Figure 1 A schematic diagram of the axial structure of the tube expander of this utility model is shown; Figure 2 This invention provides a schematic diagram of the partially disassembled axial structure of the tube expansion machine. Figure 3 A schematic diagram of the axial structure of the hole-expanding mechanism of this utility model is shown; Figure 4 A schematic diagram of the axial side structure of a partially cut section of the hole-expanding mechanism of this utility model is shown; Figure 5 A schematic diagram of the axial structure of the hole-expanding mechanism and the disassembled support frame of this utility model is shown. Figure 6 A schematic diagram of the support plate and positioning mechanism of this utility model is shown on the axial side. Figure 7 The diagram shows the axial side view of the positioning mechanism of this utility model from an elevation perspective.

[0018] 1. Conveying body; 101. First stabilizing plate; 2. Support frame; 3. Support plate; 4. Positioning mechanism; 401. First electric motor; 402. Rack; 403. Positioning plate; 404. Positioning rod; 5. Guide plate; 6. Hole reaming mechanism; 601. Second electric motor; 602. Threaded rod; 603. Moving plate; 604. Positioning block; 605. Extension rod; 606. Second stabilizing plate; 607. Positioning post; 608. Reamer head. Detailed Implementation

[0019] 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. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Example 1: Please refer to Figures 1 to 7 : This utility model proposes a braided heat shrink tubing nozzle expansion machine, comprising: a conveying body 1, which is composed of a stabilizing frame, a driving component, and a conveyor belt; a first stabilizing plate 101 is provided on one side of the conveying body 1; a support frame 2 is installed on one side of the first stabilizing plate 101; a support plate 3 is installed at the upper end of the support frame 2; a first electric motor 401 is installed on one side of the support plate 3; a gear is installed on the outer side of the drive shaft of the first electric motor 401; the connection position between the gear and the drive shaft is positioned by a keyway, referring to existing structures; and a sliding hole is opened on one side of the support frame 2 for sliding... The hole has a rectangular structure, and a rack 402 is inserted inside the sliding hole. The gear mounted on the first electric motor 401 meshes with the rack 402. Specifically, the rectangular sliding hole provides a stable sliding guide for the rack 402, preventing the rack 402 from rotating or deviating during movement, ensuring that the rack 402 moves only vertically. The first electric motor 401 achieves precise lifting control of the rack 402 through the meshing of the gear and rack 402. The height of the positioning mechanism 4 driven by the rack 402 can be adjusted according to the diameter of the heat shrink tubing, adapting to the positioning requirements of different tubing specifications and improving the adaptability of the expansion machine. The rack 402 has two cylindrical sliding holes at its bottom. A positioning rod 404 is inserted into each hole. A positioning plate 403 is located at the bottom of each positioning rod 404, and a clamping groove with an arc-shaped structure is located at the bottom of the positioning plate 403. A support spring is installed on the outer side of the positioning rod 404, with the spring force selected according to actual needs. The support spring is located between the rack 402 and the positioning plate 403. A retaining ring is installed above the positioning rod 404. The components include the first electric motor 401, rack 402, positioning plate 403, and positioning rod 404. The four components work together to form the positioning mechanism 4. Specifically, the arc-shaped clamping groove fits the outer circle of the heat shrink tubing, forming a close-fitting clamp. The support spring pushes the positioning plate 403 downward to press the tubing, achieving flexible clamping. This ensures stable positioning of the tubing while preventing excessive clamping force from deforming it. The positioning rod 404 cooperates with the sliding hole to provide vertical guidance for the positioning plate 403, preventing the positioning plate 403 from shifting. The retaining ring limits the maximum descent distance of the positioning rod 404, preventing it from falling out of the sliding hole of the rack 402 and ensuring the overall structural integrity of the positioning mechanism 4. In this embodiment, a guide plate 5 is installed on the inner side of the support frame 2. A baffle is provided on one side of the guide plate 5. A second electric motor 601 is installed on the outer side of the baffle. A threaded rod 602 is installed on the inner side of the guide plate 5. One side of the threaded rod 602 is securely connected to the drive shaft of the second electric motor 601. Referring to the keyway positioning structure of the prior art, the second electric motor 601 stably drives the threaded rod 602 to rotate. A stabilizing groove corresponding to the guide plate 5 is opened at the upper end of the support frame 2. The guide plate 5 is installed inside the stabilizing groove. Specifically, the fitting installation of the stabilizing groove and the guide plate 5 provides a precise positioning reference for the guide plate 5, avoids the guide plate 5 from lateral displacement or shaking during the operation of the mechanism, and lays the foundation for the smooth movement of the subsequent hole-expanding mechanism 6. In this embodiment, a sliding groove is formed on the inner side of the guide plate 5, and a slidingly connected movable plate 603 is installed on the top of the guide plate 5. A sliding block is provided at the bottom of the movable plate 603, extending into the interior of the sliding groove. Both the sliding block and the sliding groove are T-shaped structures. A threaded hole is formed in the middle of the sliding block, corresponding to a threaded rod 602. The threaded rod 602 passes through the interior of the threaded hole, and the thread pitch is machined according to actual needs to ensure effective threaded connection between the threaded rod 602 and the threaded hole. Specifically, the sliding block cooperates with the sliding groove to restrict the vertical displacement of the movable plate 603, ensuring that the movable plate 603 moves only horizontally along the sliding groove. The precise threaded connection between the threaded rod 602 and the threaded hole converts the rotational motion of the second electric motor 601 into the smooth linear motion of the movable plate 603. The moving speed of the movable plate 603 can be adjusted by controlling the rotational speed of the second electric motor 601, thereby achieving precise control of the hole expansion speed and adapting to the expansion needs of heat shrink tubing of different materials. In this embodiment, a vertical positioning block 604 is provided at the upper end of the movable plate 603. The positioning block 604 has a rectangular structure. A vertical extension rod 605 with a cylindrical structure is provided above the positioning block 604. A second stabilizing plate 606 is installed above the movable plate 603. A sliding hole corresponding to the positioning block 604 is opened in the middle of the second stabilizing plate 606. The positioning block 604 extends into the sliding hole. Specifically, the rectangular positioning block 604 cooperates with the sliding hole of the second stabilizing plate 606 to restrict the displacement of the second stabilizing plate 606 in the circumferential and horizontal directions, ensuring that the stabilizing plate is only vertical along the positioning block 604. Simultaneously, the positioning block 604 provides a precise positioning reference for the second stabilizing plate 606, ensuring that the reaming nozzle 608 driven by the second stabilizing plate 606 is always aligned with the center of the sleeve opening, improving the reaming accuracy. An annular groove is formed above the extension rod 605, with a retaining spring installed inside the groove and a support spring installed outside the extension rod 605. The support spring is positioned between the second stabilizing plate 606 and the retaining spring, pressing the second stabilizing plate 606 downwards to achieve a stable reset. Two positioning posts 607 are distributed at ninety degrees on the side of the second stabilizing plate 606. The outer side of the positioning posts 607... A reamer 608 is installed at the position. One side of the reamer 608 has a conical structure. A magnetic adsorption block with a rectangular structure is provided on one side of the positioning post 607. An installation groove corresponding to the magnetic adsorption block is opened on the inner side of the reamer 608, and the magnetic adsorption block extends into the interior of the installation groove. The second electric motor 601, threaded rod 602, moving plate 603, positioning block 604, extension rod 605, second stabilizing plate 606, positioning post 607, and reamer 608 cooperate to form the hole-expanding mechanism 6. Specifically, the conical reamer 608 can gradually expand the sleeve opening, disperse the expansion force, and avoid instantaneous stress. Excessive force can cause the sleeve mesh to break; two positioning posts 607 distributed at ninety degrees can install different models of expanding nozzles 608. After lifting the second stabilizing plate 606 upwards, it can be rotated ninety degrees to switch to another expanding nozzle 608, achieving the effect of quickly switching between different models of expanding nozzles 608; the cooperation between the magnetic adsorption block and the mounting groove enables the quick installation and removal of the expanding nozzle 608. When it is necessary to adapt to the expansion of sleeves of different diameters, the old expanding nozzle 608 can be directly removed and replaced with a new specification, improving the efficiency of changing the type; the components of the expanding mechanism 6 work together to convert the power of the second electric motor 601 into the precise expansion action of the expanding nozzle 608, ensuring that the expanding process is stable and efficient.

[0021] Example 2, based on Example 1, such as Figures 6-7 As shown, based on the positioning mechanism 4 in Embodiment 1, a replaceable silicone bushing can be added to the inner side of the arc clamping groove of the positioning plate 403. The flexible material of the silicone bushing further enhances the protection of the sleeve mesh and avoids clamping damage.

[0022] The working principle of this embodiment: Based on the target expansion diameter of the sleeve, select a suitable conical expansion joint 608; align the mounting groove of the expansion joint 608 with the rectangular magnetic adsorption block of the positioning post 607, and gently press to embed the adsorption block into the mounting groove, using magnetic adsorption force to quickly fix the expansion joint 608; if different specifications of expansion joint 608 are needed, install them on one side of another positioning post 607 in the same way to complete the pre-installation of dual-specification expansion joint 608. Place the braided heat shrink tubing to be expanded flat on the conveyor belt of the conveyor body 1, start the drive unit of the conveyor body 1, and the conveyor belt will move the tubing towards the support frame 2 until the front end of the tubing is close to the bottom of the positioning mechanism 4. The first electric motor 401 is started to drive the gear to rotate. Through the meshing transmission between the gear and the rack 402, the rack 402 is vertically lowered along the rectangular sliding hole of the support frame 2. During the descent of rack 402, the support spring on the outside of positioning rod 404 is compressed and generates a downward elastic force, pushing positioning plate 403 closer to the sleeve; when the arc groove of positioning plate 403 contacts the outer circle of the sleeve, the support spring continuously provides flexible clamping force, and positioning plate 403 clamps and positions the sleeve. The speed of the second electric motor 601 is set according to the material of the sleeve. For example, a lower speed is set for a flexible material sleeve, and a higher speed is set for a rigid material sleeve. The second electric motor 601 is started, and the threaded rod 602 drives the moving plate 603 to move along the sliding groove of the guide plate 5 toward the sleeve opening; the second stabilizing plate 606 above the moving plate 603 moves synchronously with it; the conical expanding head 608 is gradually inserted into the tube opening to disperse the expansion force and avoid the mesh pattern from breaking. When the expanding head 608 moves to the preset expanding position, it can be determined by the limit switch or vision sensor. The second electric motor 601 rotates in the opposite direction, driving the moving plate 603 and the expanding head 608 to reset. The first electric motor 401 is started to make the rack 402 rise, the positioning plate 403 releases the sleeve, and the conveyor belt of the conveying body 1 transports the expanded sleeve to the receiving area, completing a single hole expansion process. If different diameter sleeves need to be processed, pull the second stabilizing plate 606 upward to compress the support spring on the outside of the extension rod 605, so that the positioning block 604 rises along the sliding hole of the stabilizing plate; rotate the second stabilizing plate 606 ninety degrees so that the spare specification expansion nozzle 608 is aligned with the sleeve opening direction, release the stabilizing plate, and the support spring pushes it to reset, completing the quick changeover. When it is necessary to replace the old 608 flare head with a new one that is not pre-installed, hold the outside of the flare head 608 and apply outward pulling force to overcome the magnetic attraction of the positioning post 607, so that the adsorption block is detached from the mounting slot and the old flare head 608 is removed; align the mounting slot of the new flare head 608 with the adsorption block, press and fix it, and the replacement is completed. The whole process does not require tools and is easy to operate.

Claims

1. A braided heat shrink tubing orifice expansion machine, comprising: The conveying body (1), guide plate (5) and moving plate (603) are provided. The conveying body (1) is composed of a stabilizing frame, a driving component and a conveyor belt. A first stabilizing plate (101) is provided on one side of the conveying body (1). The first stabilizing plate (101) is characterized by a support frame (2) installed on one side of the first stabilizing plate (101), a support plate (3) installed at the upper end of the support frame (2), a first electric motor (401) installed on one side of the support plate (3), a gear installed on the outer side of the drive shaft of the first electric motor (401), a guide plate (5) installed on the inner side of the support frame (2), a baffle is provided on one side of the guide plate (5), a second electric motor (601) is installed on the outer side of the baffle, a rotatably connected threaded rod (602) is installed on the inner side of the guide plate (5), and a slidably connected moving plate (603) is installed on one side of the threaded rod (602) and the drive shaft of the second electric motor (601).

2. The braided heat shrink tubing nozzle expansion machine according to claim 1, characterized in that, The upper end of the support frame (2) has a stabilizing groove corresponding to the guide plate (5), and the guide plate (5) is installed inside the stabilizing groove.

3. The braided heat shrink tubing orifice expansion machine according to claim 1, characterized in that, A sliding groove is provided on the inner side of the guide plate (5), and a sliding block is provided at the bottom of the moving plate (603). The sliding block extends into the interior of the sliding groove, and a threaded hole is provided in the middle of the sliding block. The threaded hole corresponds to the threaded rod (602), and the threaded rod (602) passes through the interior of the threaded hole.

4. The mesh braided heat shrink tubing orifice expansion machine according to claim 1, characterized in that, A sliding hole is opened on one side of the support frame (2). The sliding hole has a rectangular structure and a rack (402) is inserted inside the sliding hole. The gear installed on the first electric motor (401) meshes with the rack (402).

5. The braided heat shrink tubing nozzle expansion machine according to claim 4, characterized in that, Two sliding holes are provided at the bottom of the rack (402), and a positioning rod (404) is inserted into each sliding hole. A positioning plate (403) is provided at the bottom of the positioning rod (404), and a clamping groove is provided at the bottom of the positioning plate (403). The clamping groove has an arc structure. A support spring is installed on the outer side of the positioning rod (404). The support spring is located between the rack (402) and the positioning plate (403). A snap ring is installed on the top of the positioning rod (404). The first electric motor (401), rack (402), positioning plate (403), and positioning rod (404) cooperate with each other to form a positioning mechanism (4).

6. The mesh braided heat shrink tubing orifice expansion machine according to claim 1, characterized in that, The upper end of the movable plate (603) is provided with a vertical positioning block (604), and a vertical extension rod (605) is provided above the positioning block (604). A second stabilizing plate (606) is installed above the movable plate (603). A sliding hole corresponding to the positioning block (604) is opened in the middle of the second stabilizing plate (606), and the positioning block (604) extends into the interior of the sliding hole.

7. The braided heat shrink tubing orifice expansion machine according to claim 6, characterized in that, An annular groove is formed at the upper part of the extension rod (605), a retaining spring is installed on the inner side of the annular groove, and a support spring is installed on the outer side of the extension rod (605). The support spring is located between the second stabilizing plate (606) and the retaining spring.

8. The braided heat shrink tubing orifice expansion machine according to claim 6, characterized in that, The second stabilizing plate (606) has two positioning posts (607) distributed at ninety degrees on its side. A reamer (608) is installed on the outer side of the positioning post (607). A magnetic adsorption block is provided on one side of the positioning post (607). A mounting groove corresponding to the magnetic adsorption block is opened on the inner side of the reamer (608). The magnetic adsorption block extends into the interior of the mounting groove. The second electric motor (601), threaded rod (602), moving plate (603), positioning block (604), extension rod (605), second stabilizing plate (606), positioning post (607), and reamer (608) cooperate with each other to form a hole-expanding mechanism (6).

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