Steel pipe necking machine for tent production with adjusting function

By designing adjustable mold and clamping components, the problem of poor specification compatibility of existing steel pipe shrinking machines has been solved, enabling efficient and low-cost steel pipe shrinking for multi-specification production.

CN224525807UActive Publication Date: 2026-07-21天津军鑫科技发展有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
天津军鑫科技发展有限公司
Filing Date
2025-08-26
Publication Date
2026-07-21

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Abstract

The utility model relates to the technical field of steel pipe necking machine, especially tent production steel pipe necking machine with adjusting function, including roof, both ends of roof bottom are all fixedly installed with U type support, the top of roof is equipped with push assembly, clamping assembly, sliding support and mould assembly from left to right in proper order, the recess that sliding support front end is equipped with has the movable plug -in of calibration ruler. This device can replace first mould, second mould or other caliber mould on the plug -in board, the calibration mould center of calibration ruler on the rotating sliding support, pull the spring in the mould to insert the bolt into the hole on the plug -in board by pulling the rotating wrench, the motor drives the second clamping block to clamp the steel pipe through the screw rod and gear linkage, the first screw rod is rotated by the handle, and the steel pipe is clamped by the first clamping block, and then the steel pipe is pushed into the mould by the hydraulic rod and the push plate, supports a variety of pipe diameter mould replacement, improves the specification compatibility, makes the production cost reduced when producing in many specifications.
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Description

Technical Field

[0001] This utility model relates to the field of steel pipe shrinking machine technology, specifically to a steel pipe shrinking machine for tent production with adjustable function. Background Technology

[0002] The adjustable steel pipe shrinking machine is a specialized piece of equipment that integrates a modular mold system and a positioning mechanism. By quickly changing the mold components, it allows for flexible adaptation to different pipe diameters, wall thicknesses, and shrinking lengths. Its core value lies in its versatility, significantly reducing changeover time and meeting the multi-specification, small-batch production needs of the tent industry.

[0003] Chinese utility model patent CN217192133U discloses a steel pipe necking device for outdoor tent production, which includes "avoiding circumferential cracks and ensuring the quality of steel pipe necking by setting up a forming extrusion; facilitating the adjustment of processing steel pipes of different lengths by setting up a pushing device; and ensuring multi-point support of the steel pipe by setting up an auxiliary device to avoid skewing"; however, the mold of this equipment is fixed, only supports a single pipe diameter, has poor specification compatibility, and requires the purchase of multiple machines for the production of multiple specifications, which increases production costs. Utility Model Content

[0004] The purpose of this invention is to provide a steel pipe shrinking machine for tent production with adjustable function, 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 steel pipe shrinking machine for tent production with adjustable function, including a top plate, with U-shaped brackets fixedly installed at both ends of the bottom of the top plate, and a pushing component, a clamping component, a sliding bracket and a mold component arranged sequentially from left to right on the top of the top plate, with a calibration ruler movably inserted into a groove at the front end of the sliding bracket.

[0006] The mold assembly includes an insert plate, the bottom of which is fixedly mounted on the top of a top plate. A first mold is slidably inserted into a groove on the insert plate. Two pins are inserted into two through holes on the first mold. The outer wall of the pin has a protruding ring, and the surface of the protruding ring is fixedly connected to the inner wall of the first mold by a spring. One end of the pin is movably inserted into a hole in the insert plate, and the other end of the pin is hinged to a rotary wrench via a rotating shaft. A second mold is provided above the first mold.

[0007] The beneficial effects of this utility model are as follows: This device replaces the first mold, the second mold, or other diameter molds on the insert plate, calibrates the center of the mold by rotating the calibration ruler on the sliding bracket, pulls the rotating wrench to drive the spring in the mold to insert the pin into the hole on the insert plate, the motor drives the second clamping block to clamp the steel pipe through the lead screw and gear, the handle is turned to rotate the first lead screw to clamp the steel pipe with the first clamping block, and then the hydraulic rod pushes the push plate to push the steel pipe into the mold. It supports the replacement of molds with multiple pipe diameters, improves specification compatibility, and reduces production costs when producing multiple specifications.

[0008] To achieve the effect of the push plate pushing the steel pipe to reduce its diameter: Further configuration: The pushing assembly includes a hydraulic cylinder, the bottom of which is fixedly installed on the top of the top plate. A pipe is provided on the right side of the hydraulic cylinder and connected to the inlet of a hydraulic pump. The outlet of the hydraulic pump is connected to a telescopic rod behind it via a delivery pipe. A fixing block is provided on the left end of the telescopic rod and is fixedly installed on the top of the top plate. A push plate is fixedly installed on the right end of the telescopic rod. Reinforcing plates are fixedly installed on both sides of the groove opened on the push plate. A first lead screw and a slide rod are movably inserted into the reinforcing plate from bottom to top. A first clamping block is threaded to both ends of the outer wall of the first lead screw, and the top end of the first clamping block is slidably sleeved on the slide rod. A turning handle is provided at one end of the first lead screw.

[0009] By adopting the above technical solution, the hydraulic pump presses the oil in the hydraulic cylinder into the telescopic rod through the delivery pipe, so that the telescopic rod pushes the push plate, thereby pushing the steel pipe to narrow its opening.

[0010] To prevent the steel pipe from tilting during the pipe necking process: The clamping assembly is further configured as follows: the clamping assembly includes two sets of support plates, one at the front and one at the back. The bottom of the support plates is fixedly installed on the top of the top plate. One set of support plates has a reinforcing block on its outer wall that is connected to the motor on its rear side. The output end of the motor is fixedly installed with a first gear. The front shaft of the first gear has a second lead screw that passes through the rear support plate and is movably inserted into the front support plate. The first gear is connected to the second gear above it via a toothed belt. The front shaft of the second gear has a third lead screw that passes through the rear support plate and is movably inserted into the front support plate. The outer ends of the third lead screw are threaded with second clamping blocks, and the bottom ends of the second clamping blocks are movably sleeved on the second lead screw.

[0011] By adopting the above technical solution, the motor drives the first gear and the second lead screw to rotate. The first gear drives the second gear and the third lead screw to rotate through its teeth, so that the second clamping block moves linearly on the second lead screw and the third lead screw to clamp and limit the steel pipe, thus preventing the steel pipe from tilting when it is narrowed.

[0012] To prevent the first mold inside the insert plate from moving up and down during the pipe necking process and affecting the pipe necking: The further configuration is as follows: the outer wall of the insert plate has multiple holes whose inner wall dimensions are consistent with the outer wall dimensions of the pin.

[0013] By adopting the above technical solution, by pulling the rotating wrench on the first mold, the pin inside the first mold is driven to insert into the hole provided on the insert plate via the rotating shaft and spring, so that the first mold cannot move up and down during the shrinking process, thereby improving the shrinking quality of the steel pipe.

[0014] To ensure the push plate holding the steel pipe has a stable stroke under the push of the telescopic rod: The top plate is further configured such that its outer wall has a groove whose inner wall size matches that of the outer wall of the push plate.

[0015] By adopting the above technical solution, the push plate that holds the steel pipe moves linearly along the groove opened in the top plate. The groove opened in the top plate supports the push plate and also makes the stroke of the push plate stable under the push of the telescopic rod.

[0016] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main view of this utility model; Figure 2 This is a schematic diagram of the driving component of this utility model; Figure 3 This is a schematic diagram of the clamping assembly of this utility model; Figure 4 This is a schematic diagram of the mold assembly of this utility model; Figure 5 This utility model Figure 4 Schematic diagram of the cross section at point A in the middle.

[0018] In the diagram: 1. Top plate; 2. U-shaped bracket; 3. Pushing assembly; 301. Hydraulic cylinder; 302. Hydraulic pump; 303. Conveying pipe; 304. Telescopic rod; 305. Fixing block; 306. Push plate; 307. Reinforcing plate; 308. First lead screw; 309. Slide rod; 3010. First clamping block; 4. Clamping assembly; 401. Support plate; 402. Motor; 403. First gear; 404. Second lead screw; 405. Toothed belt; 406. Second gear; 407. Third lead screw; 408. Second clamping block; 5. Sliding bracket; 6. Mold assembly; 601. Insert plate; 602. First mold; 603. Pin; 604. Spring; 605. Rotating shaft; 606. Rotating wrench; 607. Second mold; 7. Calibration ruler. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0020] Please see Figures 1 to 5 A steel pipe shrinking machine for tent production with adjustable function includes a top plate 1. U-shaped brackets 2 are fixedly installed at both ends of the bottom of the top plate 1. From left to right, the top of the top plate 1 is provided with a pushing component 3, a clamping component 4, a sliding bracket 5 and a mold component 6. A calibration ruler 7 is movably inserted into the groove at the front end of the sliding bracket 5.

[0021] The mold assembly 6 includes an insert plate 601, the bottom of which is fixedly mounted on the top of the top plate 1. A first mold 602 is slidably inserted into a groove on the insert plate 601. A pin 603 is inserted into two through holes on the first mold 602. The outer wall of the pin 603 is provided with a protruding ring, and the surface of the protruding ring is fixedly connected to the inner wall of the first mold 602 by a spring 604. One end of the pin 603 is movably inserted into a hole in the insert plate 601, and the other end of the pin 603 is hinged to a rotary wrench 606 through a rotating shaft 605. A second mold 607 is provided above the first mold 602.

[0022] In this embodiment, as Figure 1 and Figure 2 As shown, the pushing component 3 includes a hydraulic cylinder 301. The bottom of the hydraulic cylinder 301 is fixedly installed on the top of the top plate 1. The right side of the hydraulic cylinder 301 is provided with a pipe connected to the inlet of the hydraulic pump 302. The outlet of the hydraulic pump 302 is connected to the telescopic rod 304 behind it through a delivery pipe 303. The left end of the telescopic rod 304 is provided with a fixing block 305, and the fixing block 305 is fixedly installed on the top of the top plate 1. The right end of the telescopic rod 304 is fixedly installed with a push plate 306. The groove on the push plate 306 is fixedly installed with a reinforcing plate 307 on both sides. The reinforcing plate 307 is movably inserted with a first lead screw 308 and a slide rod 309 from bottom to top. The outer walls of the first lead screw 308 are threaded with a first clamping block 3010 at both ends, and the top end of the first clamping block 3010 is slidably sleeved on the slide rod 309. One end of the first lead screw 308 is provided with a turning handle.

[0023] In this embodiment, as Figure 1 and Figure 3As shown, the clamping assembly 4 includes two sets of support plates 401, one at the front and one at the back. The bottom of the support plate 401 is fixedly installed on the top of the top plate 1. One set of support plates 401 has a reinforcing block on its outer wall that is connected to the motor 402 on its rear side. The output end of the motor 402 is fixedly installed with a first gear 403. The front shaft of the first gear 403 is provided with a second lead screw 404. The second lead screw 404 passes through the rear support plate 401 and is movably inserted into the front support plate 401. The first gear 403 is connected to the second gear 406 above it via a toothed belt 405. The front shaft of the second gear 406 is provided with a third lead screw 407. The third lead screw 407 passes through the rear support plate 401 and is movably inserted into the front support plate 401. The outer ends of the third lead screw 407 are threadedly connected with second clamping blocks 408. The bottom ends of the second clamping blocks 408 are movably sleeved on the second lead screw 404.

[0024] In this embodiment, as Figure 4 and Figure 5 As shown, the outer wall of the insert plate 601 has multiple holes whose inner wall dimensions are consistent with the outer wall dimensions of the pin 603.

[0025] In this embodiment, as Figure 1 and Figure 2 As shown, the outer wall of the top plate 1 has a groove whose inner wall size is consistent with the outer wall structure size of the push plate 306.

[0026] The computer software involved in the hardware carriers such as motor 402 in the technical solution is software technology known to those skilled in the art. It is merely applied to the aforementioned hardware carriers. In other words, the computer software portion of the technical solution is an essential technical feature for solving the aforementioned technical problem, constituting a necessary technical feature for the technical problem solved by this application, but it is not a differentiating technical feature or a point of technical improvement. The applicant has not made any technical improvements to the computer software portion involved in the aforementioned related hardware carriers, nor is it a key technical point of the invention.

[0027] Therefore, the "motor 402" and other components involved in this application are physical functional modules that combine computer software programs or protocols in the prior art with the hardware carrier of this application. The computer software programs involved in these physical functional modules are all technologies known to those skilled in the art and are not improvements of this application. The improvement of this application should be the interaction between the various physical functional modules, that is, the improvement of the overall structure of the steel pipe shrinking machine for tent production with adjustment function in this application, so as to solve the corresponding technical problems to be solved by this application.

[0028] The working process of this adjustable tent production steel pipe shrinking machine is as follows: First, the worker places one end of the steel pipe between two sets of second clamping blocks 408, and the other end in the groove provided on the push plate 306. The worker then rotates the handle on the first lead screw 308, causing the first clamping block 3010 on the first lead screw 308 to clamp one end of the steel pipe. The hydraulic pump 302 is then started, pumping oil from the hydraulic cylinder 301 through the delivery pipe 303 to the telescopic rod 304. The telescopic rod 304 causes the push plate 306 and the clamped steel pipe to move linearly along the groove on the top plate 1. The motor 402 is then started, causing the first... Gear 403 and the second lead screw 404 rotate. The first gear 403 drives the second gear 406 and the third lead screw 407 above it to rotate via the toothed belt 405. The rotation of the second lead screw 404 and the third lead screw 407 drives two sets of second clamping blocks 408 to clamp the steel pipe. The steel pipe enters the first mold 602 under the push of the push plate 306. After the compression is completed, the telescopic rod 304 drives the steel pipe to come out of the first mold 602. The motor 402 is started to reverse, releasing the two sets of second clamping blocks 408. The turning handle on the first lead screw 308 is rotated in the opposite direction to drive the first clamping block 3010 to release the compression. When it is necessary to change the diameter of the produced steel pipe, a suitable mold is selected, such as the second mold 607. The second mold 607 is inserted into the groove opened on the insert plate 601, and the sliding bracket 5 is pulled. The outer wall of the top plate 1 has a groove whose inner wall is consistent with the outer wall structure of the sliding bracket 5. The sliding bracket 5 moves linearly along the groove opened on the top plate 1. The calibration ruler 7 is rotated ninety degrees. The sliding bracket 5 is provided with a limiting structure. The calibration ruler 7 is marked with a scale. The calibration ruler 7 is movably inserted into the sliding bracket 5 through the fixed shafts provided at both ends. The second mold 607 is moved up and down slightly, passing through the right angle of the calibration ruler 7. The center of the second mold 607 is calibrated. After calibration, the rotary wrench 606 is pulled. The rotary wrench 606 pushes the pin 603 into the groove on the insert plate 601 through the rotary shaft 605. The pin 603 drives the spring 604 to extend. The pin 603 is fixed to the inner wall of the second mold 607 by the spring 604. When the mold needs to be replaced, the rotary wrench 606 is pulled. The rotary wrench 606 pulls out the pin 603 through the rotary shaft 605. The pin 603 drives the spring 604 to compress. The pin 603 disengages from the groove on the insert plate 601. The second mold 607 can then be taken out from the insert plate 601.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A steel pipe shrinking machine for tent production with adjustable function, including a top plate (1), characterized in that: U-shaped brackets (2) are fixedly installed at both ends of the bottom of the top plate (1). From left to right, the top of the top plate (1) is provided with a pushing component (3), a clamping component (4), a sliding bracket (5) and a mold component (6). A calibration ruler (7) is movably inserted into the groove at the front end of the sliding bracket (5). The mold assembly (6) includes a insert plate (601), the bottom of which is fixedly installed on the top of the top plate (1). A first mold (602) is slidably inserted into a groove on the insert plate (601). A pin (603) is inserted into two through holes on the first mold (602). The outer wall of the pin (603) is provided with a protruding ring, and the surface of the protruding ring is fixedly connected to the inner wall of the first mold (602) by a spring (604). One end of the pin (603) is movably inserted into a hole in the insert plate (601), and the other end of the pin (603) is hinged to a rotary wrench (606) through a rotating shaft (605). A second mold (607) is provided above the first mold (602).

2. The steel pipe shrinking machine for tent production with adjustable function as described in claim 1, characterized in that: The pushing assembly (3) includes a hydraulic cylinder (301). The bottom of the hydraulic cylinder (301) is fixedly installed on the top of the top plate (1). A pipe is provided on the right side of the hydraulic cylinder (301) and connected to the inlet of the hydraulic pump (302). The outlet of the hydraulic pump (302) is connected to the telescopic rod (304) behind it through a delivery pipe (303). A fixing block (305) is provided on the left end of the telescopic rod (304), and the fixing block (305) is fixedly installed on the top of the top plate (1). A push plate (306) is fixedly installed on the right end of the push plate (304). A reinforcing plate (307) is fixedly installed on both sides of the groove opened on the push plate (306). A first lead screw (308) and a slide rod (309) are movably inserted into the reinforcing plate (307) from bottom to top. A first clamping block (3010) is threaded to both ends of the outer wall of the first lead screw (308). The top end of the first clamping block (3010) is slidably sleeved on the slide rod (309). A turning handle is provided at one end of the first lead screw (308).

3. The steel pipe shrinking machine for tent production with adjustable function as described in claim 1, characterized in that: The clamping assembly (4) includes two sets of support plates (401) at the front and rear. The bottom of the support plate (401) is fixedly installed on the top of the top plate (1). The outer wall of one set of support plates (401) is provided with a reinforcing block connected to the motor (402) at its rear. The output end of the motor (402) is fixedly installed with a first gear (403). A second lead screw (404) is provided at the front shaft of the first gear (403). The second lead screw (404) passes through the rear support plate (401) and is movably inserted into the front support plate. (401) The first gear (403) is connected to the second gear (406) above it via a toothed belt (405). A third lead screw (407) is provided at the front shaft of the second gear (406). The third lead screw (407) passes through the rear support plate (401) and is movably inserted into the front support plate (401). The outer walls of the third lead screw (407) are threaded with second clamping blocks (408) at both ends, and the bottom ends of the second clamping blocks (408) are movably sleeved on the second lead screw (404).

4. The steel pipe shrinking machine for tent production with adjustable function as described in claim 1, characterized in that: The outer wall of the insert plate (601) has a plurality of holes whose inner wall size is consistent with the outer wall size of the pin (603).

5. The steel pipe shrinking machine for tent production with adjustable function as described in claim 1, characterized in that: The outer wall of the top plate (1) has a groove whose inner wall size is consistent with the outer wall size of the push plate (306).