Jig changing mechanism for an arcuate support press

Abstract

The utility model relates to arch support production equipment technical field, and specifically is a kind of mould changing mechanism for arch support pressing equipment, including jacking component, is set on horizontal workbench;Rack, is set to the outside of press, is set along the direction of unloading of upper mould, lower mould;Translation trolley, slidingly set on rack;Hydraulic drive device, is set on rack, output and translation trolley are connected;Rotary platform, rotation is set on translation trolley;The utility model overcomes the problem of four-column space limitation of press by the cooperation of jacking component, rack, translation trolley, hydraulic drive device and rotary platform, utilizes rotary platform to realize the 90 of mould The reversing and translation of degree, make mould change more flexible and convenient, solve the problem of low efficiency of traditional manual operation;Through the jacking and translation design of hydraulic drive, avoid the high intensity labor of manual use hand-operated hoist and crowbar, significantly reduce the operation risk, improve the operation safety.

Description

Technical Field

[0001] This utility model relates to the technical field of arch support production equipment, specifically to a die changing mechanism for arch support pressing equipment. Background Technology

[0002] Arch supports are important components used for coal mine roadway support. Formed by pressing steel profiles, they possess high strength and stability, effectively supporting the roadway roof and ensuring safe coal mine production. Currently, arch support production typically employs automated forging equipment. For example, as described in the automated production line for arch supports application number 202510289097.0, the arch support pressing equipment usually uses a press. The steel profiles are placed on a lower die, and the press drives the upper die to press down, creating the arched ribs.

[0003] However, existing arch support pressing equipment has a prominent problem in practical applications: inconvenient jig replacement. Due to the variability of coal mine roadway structures, different sizes of arch supports need to be manufactured, which in turn require the production of different models of arch ribs. In the existing technology, the jig is quite heavy (about 4 tons), and the press is located above the jig, making it impossible to use hoisting equipment directly. In addition, the jig is quite long, and due to the position of the four columns of the press, it cannot be moved directly. It is necessary to rotate the jig 90 degrees in place before it can be moved. Therefore, how to quickly and conveniently replace the jig on the arch support pressing equipment has become an urgent problem to be solved.

[0004] The current practice is to weld an auxiliary platform next to the jig platform and replace it manually with the help of a hand-operated hoist and a crowbar. This is not only labor-intensive and inefficient, but also poses safety hazards and seriously restricts the overall efficiency of the production line.

[0005] Therefore, there is an urgent need to develop a fast, safe, and efficient jig changing mechanism to solve the problem of difficult jig changing in existing arch support pressing equipment, and to further improve the automation level and production efficiency of the production line. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a fast, safe and efficient die changing mechanism for arch support pressing equipment.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A fixture replacement mechanism for an arched support pressing device includes an upper fixture detachably connected to the press head and a lower fixture detachably connected to the horizontal worktable of the press. The mechanism specifically comprises: a lifting component mounted on the horizontal worktable for lifting the lower fixture; a frame mounted outside the press along the unloading direction of the upper and lower fixtures; a translation trolley slidably mounted on the frame; a hydraulic drive device mounted on the frame, with its output end connected to the translation trolley; and a rotating platform rotatably mounted on the translation trolley.

[0009] Compared with the prior art, the outstanding features of this utility model, which adopts the above technical solution, are:

[0010] This invention overcomes the problem of limited space in a four-column press by coordinating the lifting components, frame, translation trolley, hydraulic drive device, and rotating platform. The rotating platform enables 90° reversal and translation of the die, making die replacement more flexible and convenient, and solving the problem of low efficiency in traditional manual operation. Furthermore, the hydraulically driven lifting and translation design avoids the high-intensity labor of using hand-operated hoists and crowbars, significantly reducing operational risks and improving operational safety.

[0011] As a preferred embodiment, a further technical solution of this utility model is:

[0012] Preferably, the lifting component includes at least one set of first hydraulic cylinders; each set has two cylinders, symmetrically arranged along the center of the horizontal worktable, the distance between the two first hydraulic cylinders is greater than the width of the translation trolley and the width of the rotating platform, and less than the length of the lower fixture; the cylinder spacing can meet the passage requirements of the translation trolley and the rotating platform, and also ensure effective support for the lower fixture.

[0013] Preferably, the frame is equipped with channel steel rails that are compatible with the wheels of the translation trolley, ensuring that the translation trolley moves smoothly without deviation.

[0014] Preferably, the hydraulic drive device is a second hydraulic cylinder, and the piston rod of the second hydraulic cylinder is bolted to the translation trolley through the end flange; a limit block is provided on the frame, and the limit block is provided with a through hole for the piston rod of the second hydraulic cylinder to pass through.

[0015] Preferably, the rotating platform is rotatably connected to the translation trolley via a pressure bearing. The bottom of the rotating platform is provided with several circumferentially spaced casters, and the translation trolley is provided with annular grooves corresponding to several circumferentially arranged casters. The cooperation between the pressure bearing and the casters makes the rotating platform rotate smoothly and facilitates the change of direction of the fixture. The annular groove design limits the range of motion of the casters and prevents the rotating platform from deviating during rotation.

[0016] Preferably, the rotating platform has a first pin hole, and the translation trolley has two second pin holes distributed at a 90° angle to the second through hole; it also includes a pin shaft, which can restrict the rotation of the rotating platform when it passes through the first pin hole and is inserted into one of the second pin holes; the cooperation between the pin shaft and the pin hole can fix the angle of the rotating platform (such as 90°) to ensure accurate reversal of the fixture; at the same time, the rotating platform can be locked or released by inserting or removing the pin shaft, which is convenient and quick.

[0017] Preferably, a cross-shaped limiting protrusion is provided at the center of the rotating platform, and a cross-shaped limiting groove is provided at the bottom of the lower fixture corresponding to the cross-shaped limiting protrusion; the limiting structure prevents the fixture from slipping during movement or rotation, thus enhancing the safety of operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the tire changing mechanism in an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation structure of the lifting component in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the translational trolley and the rotating platform in the embodiment of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Press machine; 101. Horizontal worktable; 102. Press head; 103. Support column; 2. Lower fixture; 3. Upper fixture; 4. Second hydraulic cylinder; 5. Frame; 501. Transition slope; 6. Translation trolley; 601. Annular groove; 602. Second pin hole; 7. Rotating platform; 8. Channel steel rail; 9. Second hydraulic cylinder; 10. Limiting block; 11. Cross-shaped limiting protrusion; 12. Pin shaft. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments. The purpose of this description is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0023] like Figure 1 system Figure 3As shown, this embodiment provides a fixture replacement mechanism for an arched support pressing device. The upper fixture 3 is detachably connected to the press head 102 of the press 1, and the lower fixture 2 is detachably connected to the horizontal worktable 101 of the press 1. The fixture replacement mechanism specifically includes: a lifting component, set on the horizontal worktable 101, for lifting the lower fixture 2; a frame 5, set on the outside of the press 1, arranged along the unloading direction of the upper fixture 3 and the lower fixture 2; a translation trolley 6, slidably set on the frame 5; a hydraulic drive device, set on the frame 5, with its output end connected to the translation trolley 6; and a rotating platform 7, rotatably set on the translation trolley 6. The width of the translation trolley 6 and the diameter of the rotating platform 7 are both smaller than the spacing of the support columns 103 of the press 1. The end of the frame 5 overlaps the horizontal worktable 101 of the press 1, allowing the translation trolley and the rotating platform 7 to slide onto the horizontal worktable 101.

[0024] In this embodiment, the upper jig 3 and the press head 102 of the press 1, and the lower jig 2 and the horizontal worktable 101 of the press 1 are all bolted together. When the jig needs to be replaced, the upper jig 3 and the lower jig 2 are first removed, and then the upper jig 3 and the lower jig 2 are lifted up by the lifting component. The hydraulic drive device drives the translation trolley 6 and the rotating platform 7 to slide along the frame 5 to the underside of the upper jig 3 and the lower jig 2. The lifting component slowly lowers the upper jig 3 and the lower jig 2 onto the rotating platform 7, and then the rotating platform 7 is rotated 90°. The hydraulic drive device drives the translation trolley 6, which in turn moves the rotating platform 7 and the upper jig 3. The lower jig 2 slides to the outside of the press 1. After the jig is replaced, the hydraulic drive device drives the translation trolley 6 to move the rotating platform 7 and the newly replaced jig to the lifting component. The lifting component rises again to lift the newly replaced jig. Then, the hydraulic drive device drives the translation trolley 6 to move the rotating platform 7 to the outside of the press 1. The lifting component lowers the newly replaced jig onto the horizontal worktable 101 and connects and fixes the upper jig 3 to the press head 102 of the press 1. After the press head 102 lifts the upper jig 3, the lower jig 2 is connected and fixed to the horizontal worktable 101 of the press 1, completing the jig replacement.

[0025] Furthermore, to facilitate the movement of the trolley 6 and the rotating platform 7 onto and off the frame 5, a transition slope 501 is provided at the end of the support plate of the frame 5.

[0026] The lifting component includes at least one set of first hydraulic cylinders 4; two cylinders in each set are symmetrically arranged along the center of the horizontal worktable 101. The distance between the two first hydraulic cylinders 4 is greater than the width of the translation trolley 6 and the width of the rotating platform 7, but less than the length of the lower fixture 2. The cylinder spacing can meet the passage requirements of the translation trolley 6 and the rotating platform 7, and also ensure effective support for the lower fixture 2.

[0027] The frame 5 is equipped with a channel steel rail 8, which is compatible with the wheels of the translation trolley 6; ensuring that the translation trolley 6 moves smoothly and without deviation.

[0028] The hydraulic drive device is a second hydraulic cylinder 9. The piston rod of the second hydraulic cylinder 9 is bolted to the translation trolley 6 through the end flange. A limit block 10 is provided on the frame 5. The limit block 10 has a through hole for the piston rod of the second hydraulic cylinder 9 to pass through.

[0029] The rotating platform 7 is rotatably connected to the translation trolley 6 via a pressure bearing. The bottom of the rotating platform 7 is provided with several circumferentially spaced casters. Correspondingly, the translation trolley 6 has circumferential grooves 601 on its casters to limit their range of motion. The cooperation between the pressure bearing and the casters ensures smooth rotation of the rotating platform 7, facilitating fixture reversal. Alternatively, those skilled in the art may use a slewing bearing instead of the pressure bearing and caster structure, using a slewing bearing to rotatably connect the rotating platform 7 to the translation trolley 6.

[0030] like Figure 3 As shown, the rotating platform 7 has a first pin hole, and the translation trolley 6 has two second pin holes 602 distributed at a 90° angle to the second through hole; it also includes a pin shaft 12, which can restrict the rotation of the rotating platform 7 when it passes through the first pin hole and is inserted into one of the second pin holes 602.

[0031] When it is necessary to adjust the direction of the jig, pull out the pin 12 to unlock it, and manually or with the help of auxiliary tools push the rotating platform 7 to rotate it around the pressure bearing to the target angle (such as 90°). After rotating into position, align the first pin hole with the target second pin hole 602, insert the pin 12, and realize the mechanical fixation of the rotating platform 7 to ensure that the jig remains stable during translation.

[0032] Preferably, a cross-shaped limiting protrusion 11 is provided at the center of the rotating platform 7, and a cross-shaped limiting groove is provided at the bottom of the lower fixture 2 corresponding to the cross-shaped limiting protrusion 11; the limiting structure prevents the fixture from slipping during movement or rotation, thus enhancing the safety of operation.

[0033] This invention achieves stable lifting of the lower jig 2 through the cooperation of the lifting component and the worktable of the press 1. The symmetrical arrangement of the first hydraulic cylinder 4 ensures lifting stability and provides space for the translation trolley 6 to pass through. The channel steel rail 8 on the frame 5 and the traveling wheels of the translation trolley 6 ensure the guiding accuracy of the trolley's movement. The hydraulic drive device pushes the trolley through the flange connection and achieves precise stroke control with the limit stop 10. The rotating platform 7 achieves flexible rotation through the pressure bearing. The cooperation between the bottom universal wheel and the ring groove 601 ensures smooth rotation and prevents deviation. The precise alignment of the cross-shaped limit protrusion 11 and the jig groove further improves the installation accuracy. The specially designed pin shaft 12-pin hole locking mechanism can achieve 790° positioning and quick release of the rotating platform 7 through a simple plug-in and plug-out operation. These structural synergies not only completely solve the problems of limited space, high labor intensity, and numerous safety hazards in traditional jig replacement, but also enable efficient replacement of jigs of different sizes through modular design. This makes the entire replacement process automated, precise, and safe, significantly improving the operating efficiency and reliability of the arch support production line.

[0034] The above description is merely a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.

Claims

1. A fixture changing mechanism for an arched support pressing device, wherein the upper fixture (3) is detachably connected to the press head (102) of the press (1), and the lower fixture (2) is detachably connected to the horizontal worktable (101) of the press (1), characterized in that, The tire changing mechanism specifically includes: The lifting component is set on the horizontal worktable (101) and is used to lift the lower jig (2). The frame (5) is set outside the press (1) along the unloading direction of the upper die (3) and the lower die (2); A translation trolley (6) is slidably mounted on the frame (5); A hydraulic drive unit is mounted on the frame (5), and its output end is connected to the translation trolley (6); The rotating platform (7) is mounted on the translation trolley (6).

2. The fixture changing mechanism for the arched support pressing equipment according to claim 1, characterized in that: The lifting component includes at least one set of first hydraulic cylinders (4); two cylinders in each set are symmetrically arranged along the center of the horizontal worktable (101). The distance between the two first hydraulic cylinders (4) is greater than the width of the translation trolley (6) and the width of the rotating platform (7), and less than the length of the lower fixture (2).

3. The fixture changing mechanism for the arched support pressing equipment according to claim 1, characterized in that: The frame (5) is equipped with a channel steel rail (8), which is compatible with the wheels of the translation trolley (6).

4. The fixture changing mechanism for the arched support pressing equipment according to claim 3, characterized in that: The hydraulic drive device is a second hydraulic cylinder (9). The piston rod of the second hydraulic cylinder (9) is bolted to the translation trolley (6) through the end flange. A limit block (10) is provided on the frame (5). The limit block (10) has a through hole for the piston rod of the second hydraulic cylinder (9) to pass through.

5. The fixture changing mechanism for the arched support pressing equipment according to claim 1, characterized in that: The rotating platform (7) is rotatably connected to the translation trolley (6) via a pressure bearing. The bottom of the rotating platform (7) is provided with several circumferential casters, and the translation trolley (6) is provided with annular grooves (601) corresponding to the several circumferential casters.

6. The fixture changing mechanism for the arched support pressing equipment according to claim 1, characterized in that: The rotating platform (7) has a first pin hole, and the translation trolley (6) has two second pin holes (602) distributed at a 90° angle to the second through hole; it also includes a pin shaft (12). When the pin shaft (12) passes through the first pin hole and is inserted into one of the second pin holes (602), it can restrict the rotation of the rotating platform (7).

7. The fixture changing mechanism for the arched support pressing equipment according to claim 1, characterized in that: The rotating platform (7) has a cross-shaped limiting protrusion (11) at its center, and the lower fixture (2) has a cross-shaped limiting groove at its bottom corresponding to the cross-shaped limiting protrusion (11).

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