Wheel lift adjustment device for an extruder head cart

Abstract

This utility model discloses a wheel lifting and adjusting device for an extruder head trolley, including a frame. Multiple fixed sleeves with their centerlines perpendicular to the horizontal plane are mounted on the frame. Each fixed sleeve has a threaded portion at its upper end and a lifting portion at its lower end. A liftable telescopic rod is fitted inside the lifting portion. The threaded portion is internally threaded and threadedly connected to a hand-tightening screw. The upper end of the telescopic rod is fixedly connected to the lower end of the hand-tightening screw, and a wheel assembly is fixedly connected to the lower end of the telescopic rod. A fixing screw restricting the rotation of the telescopic rod is connected to one side. This utility model overcomes uneven ground by rotating the wheel assembly and adjusting its height through the rotation of the hand-tightening screw. By adjusting the height of different wheel assemblies, the horizontality of the extruder head and the stability of the trolley's support for the extruder head are ensured. This ensures that the extruder head will not wobble during installation, minimizing height differences and ensuring the accuracy of the extruder head's alignment.

Description

Technical Field

[0001] This utility model relates to the field of extruder head trolley technology, and in particular to a wheel lifting and adjusting device for an extruder head trolley. Background Technology

[0002] The cable extruder is the core equipment in a wire and cable production line, with the "dig head" being a crucial component that determines the extrusion quality of cable insulation or sheathing. During production, the following situations frequently occur: In the absence of a dedicated mobile trolley, factories commonly use overhead cranes for transport. This method has several drawbacks: First, it is inefficient; waiting for the crane, attaching the sling, and rough manual positioning are time-consuming and labor-intensive, leading to excessive downtime and impacting production capacity. Second, it poses significant safety hazards; the heavy extruder head sways at a height, posing a serious safety threat to operators below, and the high-temperature surface of the extruder head can easily cause burns. Third, precision is difficult to guarantee; relying on cranes and manual labor, it is difficult to achieve the required precision in aligning the extruder head with the main machine, often requiring repeated adjustments, which is time-consuming, labor-intensive, and affects product quality. Fourth, it is labor-intensive, demanding high physical strength and skills from operators, easily leading to fatigue and work-related injuries.

[0003] The cable extruder head moving trolley represents a significant technological innovation in the cable manufacturing industry, representing a shift from traditional, outdated operating methods in pursuit of more efficient, safer, higher-quality, and lower-cost production models. For example... Figure 1 As shown, existing extruder head trolleys are generally designed with support rods to fix the extruder head, which are welded to a bracket. The bracket has four feet where wheels are directly welded or screwed on. In actual use, due to the difficulty in ensuring the levelness of the factory floor, the wheels experience uneven force. In scenarios with poor floor levelness, the bracket may even wobble. This can easily create height differences when aligning the extruder head with the injection molding machine, directly affecting the installation accuracy of the extruder head and indirectly impacting the product quality of the extruded cable. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a wheel lifting and adjusting device for an extruder head trolley.

[0005] To achieve the above objectives, a wheel lifting and adjusting device for an extruder head trolley includes a frame. Multiple fixed sleeves with their centerlines perpendicular to the horizontal plane are mounted on the frame. Each fixed sleeve has a threaded portion at its upper end and a lifting portion at its lower end. A liftable telescopic rod is fitted inside the lifting portion. The threaded portion is internally threaded and threadedly connected to a hand-tightening screw. The upper end of the telescopic rod is fixedly connected to the lower end of the hand-tightening screw. A wheel assembly is fixedly connected to the lower end of the telescopic rod. A fixing screw restricting the rotation of the telescopic rod is connected to one side of the telescopic rod.

[0006] The fixed sleeve is arranged vertically. The upper end of the fixed sleeve has a threaded part that connects to the hand-tightening screw. By turning the screw, the hand-tightening screw can be raised and lowered within the fixed sleeve. The lower end of the fixed sleeve has a lifting part that guides the raising and lowering of the telescopic rod. Since the telescopic rod is fixedly connected to the hand-tightening screw, the hand-tightening screw can drive the telescopic rod to rotate and raise and lower synchronously. The wheel assembly is fixedly connected to the telescopic rod. Thus, by rotating the hand-tightening screw, the wheel assembly can be rotated and its height adjusted to overcome uneven ground. By adjusting the height of different wheel assemblies, the levelness of the extruder head and the stability of the trolley's support for the extruder head are ensured. This ensures that the extruder head will not wobble during installation and will not easily produce height differences, thus ensuring the accuracy of the extruder head's installation. Since the height of the wheel assembly is adjusted by rotating the hand-tightening screw, a fixing screw is provided to limit the rotation of the telescopic rod. After the height is adjusted, the screw is tightened to fix it, preventing slight rotation of the hand-tightening screw from affecting the accuracy.

[0007] Preferably, the lifting part is provided with a strip groove along its length, and the fixing screw is correspondingly disposed in the strip groove.

[0008] The hand-tightening screw drives the telescopic rod to rotate and rise. The connection position between the telescopic rod and the fixing screw remains unchanged. Therefore, the slotted groove allows direct observation of the connection position between the telescopic rod and the fixing screw. After adjustment, the fixing screw is fixedly connected to the telescopic rod through the slotted groove. The slotted groove also restricts the left and right swing of the fixing screw, thus limiting the telescopic rod from continuing to rotate. The telescopic rod can be positioned in a simple way.

[0009] Preferably, there are four fixing sleeves arranged in a rectangular array on the vehicle frame.

[0010] The rectangular array arrangement ensures that the wheel components in different positions are subjected to consistent forces, which helps to control the stability of the frame.

[0011] Preferably, a horizontally arranged mounting plate is fixedly connected to the lower end of the telescopic rod, and the wheel assembly is fixedly connected to the mounting plate.

[0012] The purpose of the mounting plate is to facilitate its fixed installation with the wheel assembly.

[0013] Preferably, the mounting plate is provided with multiple locking screws passing through the corresponding installation positions of the wheel assembly, and the locking screws are connected to locking nuts to fix the mounting plate to the wheel assembly.

[0014] The device is fixed by using a combination of locking screws and locking nuts, making the operation simple and convenient.

[0015] Preferably, the upper part of the fixing sleeve is provided with a positioning step, and the fixing sleeve is fixed to the vehicle frame by welding.

[0016] Considering that the installation of different mounting sleeves with the frame needs to ensure that the different mounting sleeves are in the same horizontal position, positioning steps are set on the mounting sleeves. After the positioning steps are positioned with the frame, the mounting sleeves are welded to the frame to fix them.

[0017] Preferably, the hand-tightening screw includes a handle portion and a screw portion arranged vertically, wherein the screw portion is connected to the threaded portion and extends into the fixed sleeve to be fixedly connected to the telescopic rod.

[0018] The hand-tightening screw has a handle for easy manual operation, while the threaded part is used to connect the telescopic rod and to the fixed sleeve.

[0019] Compared with the prior art, the beneficial effects of this utility model are: This utility model features a vertically arranged fixing sleeve. The upper end of the fixing sleeve has a threaded section that connects to a hand-tightening screw. Tightening the screw allows it to move up and down within the fixing sleeve. The lower end of the fixing sleeve has a lifting section that guides the movement of the telescopic rod. Since the telescopic rod is fixedly connected to the hand-tightening screw, the screw can drive the telescopic rod to rotate and move up and down synchronously. The wheel assembly is fixedly connected to the telescopic rod. The rotation of the hand-tightening screw drives the wheel assembly to rotate and adjust its height to overcome uneven ground. Adjusting the height of different wheel assemblies ensures the levelness of the extruder head and the stability of the trolley's support for the extruder head, preventing wobbling and height differences during installation and ensuring accurate installation. Because the height of the wheel assembly is adjusted by rotating the hand-tightening screw, a fixing screw is provided to limit the rotation of the telescopic rod. After adjusting the height, the screw is tightened to secure the wheel assembly and prevent slight rotation of the hand-tightening screw from affecting accuracy. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the embodiments will be briefly introduced below.

[0021] Figure 1 This is a schematic diagram illustrating the background technology of this utility model.

[0022] Figure 2 This is a schematic diagram of the structure of this utility model.

[0023] Figure 3 This is a schematic diagram of a partial cross-sectional structure of the present invention.

[0024] Figure 4 This is a partial structural schematic diagram of the present invention.

[0025] Figure 5 This is a partial structural schematic diagram of the present invention. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0027] This utility model provides a wheel lifting and adjusting device for an extruder head trolley, such as... Figures 1-5 As shown, the vehicle includes a frame 1, on which multiple fixed sleeves 2 with their centerlines perpendicular to the horizontal plane are mounted. All fixed sleeves 2 are on the same horizontal plane. Each fixed sleeve 2 has a threaded portion 21 at its upper end and a lifting portion 22 at its lower end. A telescopic rod 3 that can be raised or lowered is fitted inside the lifting portion 22. The threaded portion 22 is internally threaded and threadedly connected to a hand-tightening screw 4. The upper end of the telescopic rod 3 is fixedly connected to the lower end of the hand-tightening screw 4. Rotating the hand-tightening screw 4 can drive the telescopic rod 3 to rotate and rise or fall. A wheel assembly 5 is fixedly connected to the lower end of the telescopic rod 3. The wheel assembly 5 can be implemented using any existing technology. 3. While raising and lowering, the wheel assembly 5 is also raised and lowered to adjust its height to adapt to different ground conditions. By adjusting the height of different wheel assemblies 5, the horizontality of the extruder head and the stability of the trolley's support for the extruder head are ensured. This ensures that the extruder head will not wobble during installation and will not easily cause height differences, thus ensuring the accuracy of the extruder head's installation. Since the height of the wheel assembly 5 is adjusted by turning the hand screw 4, a fixing screw 6 is connected to one side of the telescopic rod 3 to limit its rotation. After the height is adjusted, it is fixed by tightening the screw 6 to prevent slight rotation of the hand screw 4 from affecting the accuracy.

[0028] The lifting part 22 has a strip groove 23 along its length, and the fixing screw 6 is correspondingly disposed in the strip groove 23. Tightening the screw 4 drives the telescopic rod 3 to rotate and rise / fall. Since the connection position between the telescopic rod 3 and the fixing screw 6 remains unchanged, the strip groove 23 allows direct observation of the connection position between the telescopic rod 3 and the fixing screw 6. After adjustment, the fixing screw 6 is fixedly connected to the telescopic rod 3 through the strip groove 23. The strip groove 23 also restricts the left-right swing of the fixing screw 6, thus limiting the continued rotation of the telescopic rod 3. This simple method allows for the positioning of the telescopic rod 3.

[0029] Considering the issues of support balance and force uniformity of wheel assembly 5, four fixing sleeves 2 are arranged in a rectangular array on the frame 1. The rectangular array arrangement ensures the stability of the frame 1 after adjustment.

[0030] Considering that the wheel assembly 5 and the telescopic rod 3 are not easy to fix and install, a horizontally arranged mounting plate 7 is fixedly connected to the lower end of the telescopic rod 3, and the wheel assembly 5 is fixedly connected to the mounting plate 7.

[0031] To facilitate the installation of the wheel assembly 5 and the mounting plate 7, the mounting plate 7 is provided with multiple locking screws 8 passing through the corresponding installation positions of the wheel assembly 5. The locking screws 8 are connected to locking nuts 81 to fix the mounting plate 7 and the wheel assembly 5.

[0032] The upper part of the fixing sleeve 2 is provided with a positioning step 24, and the fixing sleeve 2 is fixed to the frame 1 by welding. Considering that the installation between different fixing sleeves 2 and the frame 1 needs to ensure that different fixing sleeves 2 are in the same horizontal position, a positioning step 24 is provided on the fixing sleeve 2. After the positioning step 24 is positioned with the frame 1, the fixing sleeve 2 and the frame 1 are welded and fixed by welding.

[0033] Since the hand-tightening screw 4 is adjusted manually, the hand-tightening screw 4 includes a handle part 41 and a screw part 42 arranged vertically. The handle part 41 is easy to operate manually. The screw part 42 is connected to the threaded part 21 and extends into the fixed sleeve 2 to be fixedly connected to the telescopic rod 3. The screw part 42 is used to connect the telescopic rod 3 and to the fixed sleeve 2 to drive the lifting action.

[0034] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A wheel lifting and adjusting device for an extruder head trolley, characterized in that, The vehicle includes a frame with multiple fixed sleeves whose centerlines are perpendicular to the horizontal plane. The upper end of each fixed sleeve has a threaded portion, and the lower end of each fixed sleeve has a lifting portion. The lifting portion is fitted with a telescopic rod that can be raised or lowered. The threaded portion is internally threaded and threadedly connected to a hand-tightening screw. The upper end of the telescopic rod is fixedly connected to the lower end of the hand-tightening screw, and the lower end of the telescopic rod is fixedly connected to a wheel assembly. A fixing screw that restricts the rotation of the telescopic rod is connected to one side of the telescopic rod.

2. The wheel lifting and adjusting device for an extruder head trolley according to claim 1, characterized in that, The lifting part is provided with a strip groove along its length, and the fixing screw is correspondingly provided in the strip groove.

3. The wheel lifting and adjusting device for an extruder head trolley according to claim 1, characterized in that, The fixing sleeves are four in number and arranged in a rectangular array on the frame.

4. The wheel lifting and adjusting device for an extruder head trolley according to claim 1, characterized in that, The lower end of the telescopic rod is fixedly connected to a horizontally arranged mounting plate, and the wheel assembly is fixedly connected to the mounting plate.

5. The wheel lifting and adjusting device for an extruder head trolley according to claim 4, characterized in that, The mounting plate is provided with multiple locking screws passing through the corresponding installation positions of the wheel assembly. The locking screws are connected to locking nuts to fix the mounting plate to the wheel assembly.

6. The wheel lifting and adjusting device for an extruder head trolley according to claim 1, characterized in that, The upper part of the fixing sleeve is provided with a positioning step, and the fixing sleeve is fixed to the vehicle frame by welding.

7. The wheel lifting and adjusting device for an extruder head trolley according to claim 1, characterized in that, The hand-tightening screw includes a handle and a screw part arranged vertically. The screw part is connected to the threaded part and extends into the fixed sleeve to be fixedly connected to the telescopic rod.

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