Necking device for production of greenhouse skeletons
Patent Information
- Application Number
- CN202522481211.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-24
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-24
AI Technical Summary
The existing necking device has a fixed position of the limiting plate, which is not easy to adjust, and it is cumbersome to replace it after long-term use due to wear and tear.
A device was designed that includes a worktable, a narrowing mechanism, and first and second limiting mechanisms. The limit adjustment is achieved by driving the slider and baffle to move through the motor-driven lead screw, and the greenhouse pipe is narrowed by clamping it with a hydraulic cylinder and template. The baffle can be quickly disassembled when it is worn.
This technology allows for adjustment of the limit plate position based on the length of the greenhouse pipe, simplifying the limit plate replacement process and improving operational convenience and equipment lifespan.
Smart Images

Figure CN224928512U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of necking devices, specifically a necking device for greenhouse frame production. Background Technology
[0002] Greenhouse pipes are the skeleton structure of greenhouses such as plastic greenhouses. In order to facilitate the splicing of greenhouse pipes, the ends of some greenhouse pipes are usually narrowed so that they can be inserted into the ends of other greenhouse pipes.
[0003] Existing narrowing devices use upper and lower molds to limit and fix the top and bottom of the greenhouse pipe during use, and a limiting plate is used to limit and fix the end away from the narrowing. The existing limiting plate has a fixed position and is not easy to adjust according to the length of the greenhouse pipe. In addition, the surface of the limiting plate is prone to wear after long-term use. To better limit the pipe, it needs to be replaced, but the replacement is cumbersome. Therefore, this patent proposes a narrowing device for greenhouse frame production to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a necking device for greenhouse frame production, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a shrinking device for greenhouse frame production, comprising a workbench, a shrinking mechanism, a first limiting mechanism, and a second limiting mechanism at the top of the workbench, the first limiting mechanism being located between the shrinking mechanism and the second limiting mechanism, the second limiting mechanism comprising a mounting frame fixed to the top of the workbench, a lead screw rotatably connected between the inner walls of the two sides of the mounting frame, a slider screwed to the outer wall of the lead screw, a limiting rod fixed between the inner walls of the two sides of the mounting frame, the limiting rod passing through the slider, a connecting frame fixed to the top of the slider, a baffle provided on the side of the connecting frame near the first limiting mechanism, an insert fixed on the side of the baffle near the connecting frame, a limiting groove opened on one side of the connecting frame, the insert inserted into the limiting groove, a motor fixed on one side of the mounting frame, the output end of the motor passing through the mounting frame and fixed to the lead screw.
[0006] Preferably, the insert is T-shaped and fits into the limiting groove, and the connecting bracket is L-shaped.
[0007] Preferably, the necking mechanism includes a fixed frame fixed to the top of the workbench, a first hydraulic cylinder fixed to one side of the fixed frame, a movable frame fixed to the output end of the first hydraulic cylinder after passing through the fixed frame, and a necking mold fixed to one side of the movable frame.
[0008] Preferably, the first limiting mechanism includes a mounting plate fixed to the top of the workbench, a first mounting component fixed to the top of the mounting plate, a lower template provided above the first mounting component, a support frame fixed to the top of the workbench, a second hydraulic cylinder fixed to the top of the support frame, a second mounting component fixed to the output end of the second hydraulic cylinder after passing through the support frame, and an upper template provided at the bottom of the second mounting component.
[0009] Preferably, dust covers are fixed between the inner walls of both sides of the mounting bracket and the two sides of the slider.
[0010] Preferably, a limit strip is fixed to the top of the workbench, and a slide bar is fixed to the bottom of the movable frame, with the slide bar sliding on the outer wall of the limit strip.
[0011] Preferably, a controller is fixed to the top of the workbench, and the controller is electrically connected to the motor, the first hydraulic cylinder, and the second hydraulic cylinder.
[0012] Compared with the prior art, the beneficial effects of this utility model are: By starting the motor, the lead screw rotates, which in turn moves the slider. The slider's movement causes the connecting frame and baffle to move, thus limiting one end of the greenhouse pipe. The position of the baffle can be adjusted according to the length of the greenhouse pipe. When the baffle needs to be replaced due to wear after long-term use, it can be easily and quickly disassembled by simply moving the baffle upwards and allowing the baffle insert to move out of the limiting groove. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is a side view of the present invention.
[0014] In the diagram: 1. Workbench; 2. Narrowing mechanism; 201. Fixed frame; 202. First hydraulic cylinder; 203. Moving frame; 204. Narrowing mold; 3. Limiting strip; 4. First limiting mechanism; 401. Mounting plate; 402. Lower template; 403. Support frame; 404. Second hydraulic cylinder; 405. Second mounting component; 406. Upper template; 5. Second limiting mechanism; 501. Mounting frame; 502. Lead screw; 503. Limiting rod; 504. Slider; 505. Connecting frame; 506. Baffle; 507. Insert strip; 508. Motor; 6. Dust cover; 7. Controller. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Greenhouse pipes are the skeleton structure of greenhouses such as plastic greenhouses. In order to facilitate the splicing of greenhouse pipes, the ends of some greenhouse pipes are usually narrowed so that they can be inserted into the ends of other greenhouse pipes.
[0017] like Figures 1-4 As shown, this utility model provides a technical solution: a shrinking device for greenhouse frame production, including a workbench 1. A shrinking mechanism 2, a first limiting mechanism 4, and a second limiting mechanism 5 are arranged at the top of the workbench 1. The first limiting mechanism 4 is located between the shrinking mechanism 2 and the second limiting mechanism 5. The second limiting mechanism 5 includes a mounting frame 501 fixed to the top of the workbench 1. A lead screw 502 is rotatably connected between the inner walls of both sides of the mounting frame 501. A slider 504 is screwed onto the outer wall of the lead screw 502. The inner walls of both sides of the mounting frame 501... A limiting rod 503 is fixed between the sliding block 504 and the first limiting mechanism 4. The limiting rod 503 passes through the sliding block 504. A connecting frame 505 is fixed to the top of the sliding block 504. A baffle 506 is provided on the side of the connecting frame 505 near the first limiting mechanism 4. An insert 507 is fixed on the side of the baffle 506 near the connecting frame 505. A limiting groove is opened on one side of the connecting frame 505, and the insert 507 is inserted into the limiting groove. A motor 508 is fixed on one side of the mounting frame 501. The output end of the motor 508 passes through the mounting frame 501 and is fixed to the lead screw 502. The insert 507 is T-shaped and fits the limiting groove. The connecting frame 505 is L-shaped. Dust covers 6 are fixed between the inner walls of both sides of the mounting frame 501 and the sides of the sliding block 504.
[0018] It should be noted that by starting the motor 508, the lead screw 502 rotates, which drives the slider 504 to move. The movement of the slider 504 causes the connecting frame 505 and the baffle 506 to move. In this way, the baffle 506 can limit one end of the greenhouse pipe, and the position of the baffle 506 can be adjusted according to the length of the greenhouse pipe. When the surface of the baffle 506 wears down after long-term use and needs to be replaced, it can be easily and quickly disassembled by simply moving the baffle 506 upwards so that the insert 507 of the baffle 506 moves out of the limiting groove.
[0019] like Figure 1As shown, the necking mechanism 2 includes a fixed frame 201 fixed to the top of the workbench 1. A first hydraulic cylinder 202 is fixed to one side of the fixed frame 201. The output end of the first hydraulic cylinder 202 passes through the fixed frame 201 and is fixed to a movable frame 203. A necking mold 204 is fixed to one side of the movable frame 203. The necking mold 204 has a mold groove on the side facing the first limiting mechanism 4, and a core strip is fixedly connected in the mold groove. A limiting strip 3 is fixed to the top of the workbench 1, and a slide bar is fixed to the bottom of the movable frame 203. The slide bar slides on the outer wall of the limiting strip 3.
[0020] It should be noted that the first hydraulic cylinder 202 drives the shrinking mold 204 to move towards the greenhouse tube, the core strip is inserted into the greenhouse tube, the greenhouse tube is inserted into the mold groove to form, and finally the shrinking work is achieved.
[0021] like Figure 2 As shown, the first limiting mechanism 4 includes a mounting plate 401 fixed to the top of the workbench 1. A first mounting component is fixed to the top of the mounting plate 401. A lower template 402 is provided above the first mounting component and is inserted into the first mounting component. A connecting plate is fixed to the top of the mounting plate 401. The lower template 402 and the connecting plate are fixed together by bolts. A support frame 403 is fixed to the top of the workbench 1. A second hydraulic cylinder 404 is fixed to the top of the support frame 403. The output end of the second hydraulic cylinder 404 passes through the support frame 403 and is fixed to a second mounting component 405. An upper template 406 is provided at the bottom of the second mounting component 405 and is inserted into the second mounting component 405. The upper template 406 and the second mounting component 405 are fixed together by bolts.
[0022] It should be noted that a displacement sensor is installed on one side of the connecting frame 505 to detect the distance between the baffle 506 and the support frame 403. The position of the baffle 506 is then adjusted according to the length of the greenhouse pipe to better limit the greenhouse pipe. By activating the second hydraulic cylinder 404, the second hydraulic cylinder 404 drives the second mounting part 405 and the upper template 406 to move downward, so that the greenhouse pipe is clamped between the lower template 402 and the upper template 406, thus achieving the limitation.
[0023] like Figure 4 As shown, a controller 7 is fixed at the top of the workbench 1. The controller 7 is electrically connected to the motor 508, the first hydraulic cylinder 202, the second hydraulic cylinder 404, and the displacement sensor.
[0024] It should be noted that the electrical components in this solution are controlled by the controller 7 that is matched with them, and the control circuit can be implemented by those skilled in the art through simple programming. It is common knowledge in the field and is only used without modification. Furthermore, since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.
[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.
Claims
1. A necking device for greenhouse frame production, comprising a workbench (1), characterized in that: The top of the workbench (1) is provided with a narrowing mechanism (2), a first limiting mechanism (4), and a second limiting mechanism (5). The first limiting mechanism (4) is located between the narrowing mechanism (2) and the second limiting mechanism (5). The second limiting mechanism (5) includes a mounting bracket (501) fixed to the top of the workbench (1). A lead screw (502) is rotatably connected between the inner walls of the two sides of the mounting bracket (501). A slider (504) is screwed onto the outer wall of the lead screw (502). A limiting rod (503) is fixed between the inner walls of the two sides of the mounting bracket (501). The limiting rod (503) A connecting frame (505) is fixed at the top of the slider (504). A baffle (506) is provided on the side of the connecting frame (505) near the first limiting mechanism (4). An insert (507) is fixed on the side of the baffle (506) near the connecting frame (505). A limiting groove is opened on one side of the connecting frame (505). The insert (507) is inserted into the limiting groove. A motor (508) is fixed on one side of the mounting frame (501). The output end of the motor (508) passes through the mounting frame (501) and is fixed to the lead screw (502).
2. The shrinking device for greenhouse frame production according to claim 1, characterized in that: The insert (507) is T-shaped and is adapted to the limiting groove. The connecting bracket (505) is L-shaped.
3. The shrinking device for greenhouse frame production according to claim 1, characterized in that: The necking mechanism (2) includes a fixed frame (201) fixed to the top of the workbench (1), a first hydraulic cylinder (202) fixed on one side of the fixed frame (201), a movable frame (203) fixed after the output end of the first hydraulic cylinder (202) passes through the fixed frame (201), and a necking mold (204) is fixed on one side of the movable frame (203).
4. The shrinking device for greenhouse frame production according to claim 1, characterized in that: The first limiting mechanism (4) includes a mounting plate (401) fixed to the top of the workbench (1). A first mounting component is fixed to the top of the mounting plate (401). A lower template (402) is provided above the first mounting component. A support frame (403) is fixed to the top of the workbench (1). A second hydraulic cylinder (404) is fixed to the top of the support frame (403). The output end of the second hydraulic cylinder (404) passes through the support frame (403) and is fixed to a second mounting component (405). An upper template (406) is provided at the bottom of the second mounting component (405).
5. The shrinking device for greenhouse frame production according to claim 1, characterized in that: Dust covers (6) are fixed between the inner walls of both sides of the mounting bracket (501) and the two sides of the slider (504).
6. The shrinking device for greenhouse frame production according to claim 1, characterized in that: The top of the workbench (1) is fixed with a limit strip (3), and the bottom of the movable frame (203) is fixed with a slide bar, which slides on the outer wall of the limit strip (3).
7. The shrinking device for greenhouse frame production according to claim 1, characterized in that: The top of the workbench (1) is fixed with a controller (7), which is electrically connected to the motor (508), the first hydraulic cylinder (202), and the second hydraulic cylinder (404).
