Adjustable mechanical limiting device suitable for powder press

Abstract

The utility model relates to the technical field of hydraulic machines, in particular to an adjustable mechanical limiting device suitable for a powder press. Comprising a hydraulic machine composed of an upper beam, a movable beam, a floating beam and a lower beam which are sequentially arranged on four stand columns from top to bottom, the floating beam is connected to the four stand columns in a sliding mode, a main cylinder is fixed to the upper beam and penetrates through the movable beam, demolding cylinders are arranged on the two sides of the floating beam, the demolding cylinders are fixed to the lower plane of the upper beam, and the lower plane of the upper beam is fixed to the lower plane of the lower beam. A feeding device is arranged on one side of the floating beam, and a plurality of adjustable mechanical limiting devices are arranged between the floating beam and the lower beam. The device is suitable for replacement of multiple sets of molds, saves cost and can adapt to large demolding force.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic press technology, and in particular to an adjustable mechanical limit device suitable for powder presses. Background Technology

[0002] For powder presses, cylindrical supports are commonly used for limiting movement. The upper limiting height is the distance from the upper die to the top surface of the product (after pressing), and the lower limiting height is the distance from the lower die to the bottom surface of the product (after pressing). However, this type of limiting device is only suitable for one type of mold, and its function is merely support. When customers have multiple molds and require high demolding forces, ordinary limiting devices cannot meet the requirements. If multiple molds are handled using ordinary limiting devices, many sets of limiting devices would be needed, increasing costs. Furthermore, conventional limiting devices can be damaged under high demolding forces.

[0003] Therefore, this utility model proposes an adjustable limiting device suitable for powder presses, which is applicable to the replacement of multiple sets of molds, saves costs, and can adapt to larger demolding forces. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing an adjustable mechanical limit device suitable for powder presses.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An adjustable mechanical limiting device for a powder press includes a hydraulic press consisting of an upper beam, a movable beam, a floating beam, and a lower beam arranged sequentially from top to bottom on four columns. The floating beam is slidably connected to the four columns. The main cylinder is fixed to the upper beam and passes through the lower beam. Demolding cylinders are provided on both sides of the floating beam and are fixed to the lower plane of the upper beam. A feeding device is provided on one side of the floating beam. Multiple adjustable mechanical limiting devices are provided between the floating beam and the lower beam.

[0007] Furthermore, the adjustable mechanical limiting device includes a limiting nut and a limiting screw. The limiting nut includes an upper limiting nut and a lower limiting nut. The limiting screw is threadedly connected to the upper limiting nut and the lower limiting nut respectively. The limiting screw passes through the floating beam. The upper limiting nut moves up and down on the limiting screw section on the upper plane of the floating beam, and the lower limiting nut moves up and down on the limiting screw section between the floating beam and the lower beam.

[0008] Furthermore, a clamping groove is provided on one side of the limiting nut in the radial direction, and the clamping groove is used to clamp the thread on the limiting screw.

[0009] Furthermore, a fixing device is provided at the bottom of the limiting screw. The fixing device includes a fixing seat and a fixing seat locking nut. The fixing seat locking nut is located above the fixing seat. The bottom of the limiting screw is threadedly connected to the fixing seat and the fixing seat locking nut. The fixing seat is fixed to the upper plane of the lower beam.

[0010] Furthermore, there are two adjustable mechanical limiting devices.

[0011] Furthermore, the feeding device includes a feeding cylinder, a feeding box, and a feeding working plate. The feeding working plate is fixedly mounted on the upper plane of the floating beam, and the feeding box is slidably mounted on the feeding working plate. The feeding box is connected to the output end of the feeding cylinder.

[0012] Compared with existing technologies, the adjustable limiting device for powder presses provided by this utility model adopts a simple mechanical structure, and its advantages are as follows:

[0013] 1. Easy to operate. For various molds of different heights, there is no need for frequent disassembly. Simply turn the corresponding nut to the required position to meet the needs of various mold heights.

[0014] 2. The limit nut is self-locking. After adjusting it to the required position, tighten the bolt to achieve self-locking and ensure that the upper limit nut and the upper limit nut do not loosen.

[0015] 3. The structure is simple, easy to disassemble, install and maintain, reducing operation and maintenance costs and improving equipment availability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a conventional limiting device in the prior art;

[0017] Figure 2 This is a front view structural diagram of the present invention;

[0018] Figure 3 for Figure 2 Schematic diagram of the AA-direction structure;

[0019] Figure 4 This is a schematic diagram of the limiting nut structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the material pushing structure of this utility model;

[0021] In the diagram: 10. Main cylinder, 11. Upper beam, 12. Movable beam, 13. Column, 14. Floating beam, 15. Lower beam, 16. Demolding cylinder, 20. Adjustable mechanical limit device, 21. Fixed seat, 22. Fixed seat locking nut, 23. Limit nut, 231. Upper limit nut, 232. Lower limit nut, 233. Clamping groove, 24. Limit screw, 30. Feeding cylinder, 31. Feeding box, 32. Feeding work plate, 40. Upper die punch assembly, 41. Lower die punch assembly, 42. Die core assembly, 51. Upper limit post, 52. Lower limit post. Detailed Implementation

[0022] 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.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Figure 1 The diagram below shows a conventional limiting device in the prior art, which uses an upper limit post 51 and a lower limit post 52 to limit the movement distance of the floating beam 14. This method is only applicable to the height of the same mold.

[0025] Example 1, referring to Figure 2 and Figure 3 An adjustable mechanical limiting device 20 suitable for a powder press includes a hydraulic press consisting of an upper beam 11, a movable beam 12, a floating beam 14, and a lower beam 15 arranged sequentially from top to bottom on four columns 13. The floating beam 14 is slidably connected to the four columns 13. The main cylinder 10 is fixed to the upper beam 11 and passes through the lower beam 15. Demolding cylinders 16 are provided on both sides of the floating beam 14. The demolding cylinders 16 are fixed to the lower plane of the upper beam 11. The floating beam 14 is characterized by having a feeding device on one side and multiple adjustable mechanical limiting devices 20 between the floating beam 14 and the lower beam 15.

[0026] With the above scheme, the feeding device can feed material into the floating beam 14, the main cylinder 10 is used to press the product, the demolding cylinder 16 is used to remove the pressed finished product from the mold cavity, the feeding device pushes the finished product out of the pressing area while feeding, and the adjustable mechanical limit device 20 can adjust the moving distance of the floating beam 14 according to different mold heights.

[0027] In Example 2, an adjustable mechanical limiting device 20 is provided to adjust different distances of the floating beam 14. The adjustable mechanical limiting device 20 includes a limiting nut 23 and a limiting screw 24. The limiting nut 23 includes an upper limiting nut 231 and a lower limiting nut 232. The limiting screw 24 is threadedly connected to the upper limiting nut 231 and the lower limiting nut 232 respectively. The limiting screw 24 passes through the floating beam 14. The upper limiting nut 231 moves up and down on the limiting screw 24 section on the upper plane of the floating beam 14. The lower limiting nut 232 moves up and down on the limiting screw 24 section between the floating beam 14 and the lower beam 15.

[0028] Example 3, as Figure 4 As shown, a clamping groove 233 is provided on one side of the limiting nut 23 in the radial direction, and the clamping groove 233 is used to clamp the thread on the limiting screw 24.

[0029] In this embodiment, the limiting nut 23 is implemented as follows: a bolt hole with a clamping groove 233 is provided through the clamping groove 233 of the limiting nut 23. After the position of the limiting nut 23 is determined, a bolt is screwed into the bolt hole so that the clamping groove 233 clamps the thread on the limiting screw 24, thereby fixing the position of the limiting nut 23 on the limiting screw 24.

[0030] In Example 4, a fixing device is provided at the bottom of the limiting screw 24. The fixing device includes a fixing seat 21 and a fixing seat locking nut 22. The fixing seat locking nut 22 is located above the fixing seat 21. The bottom of the limiting screw 24 is threadedly connected to the fixing seat 21 and the fixing seat locking nut 22. The fixing seat 21 is fixed to the upper plane of the lower beam 15.

[0031] In this embodiment, the fixing seat 21 is first fixed to the lower beam 15 with bolts. Then, the limiting screw 24 is screwed into the fixing seat 21, and the fixing seat locking nut 22 is installed on the fixing seat 21. The fixing seat locking nut 22 locks the fixing seat 21 to prevent it from loosening. Finally, the lower limiting nut 232, the floating beam 14, and the upper limiting nut 231 are installed on the screw in sequence.

[0032] In this embodiment, there are two adjustable mechanical limiting devices 20.

[0033] To ensure higher limiting accuracy, position sensors can be installed on the upper limit nut 231 and the lower limit nut 232. The position sensors, the upper limit nut 231 and the lower limit nut 232 are used together to limit the stroke of the floating beam 14.

[0034] Example 5, please continue to refer to Figure 5 In the process, the feeding device includes a feeding cylinder 30, a feeding box 31 and a feeding working plate 32. The feeding working plate 32 is fixedly installed on the upper plane of the floating beam 14, and the feeding box 31 is slidably installed on the feeding working plate 32. The feeding box 31 is connected to the output end of the feeding cylinder 30.

[0035] In this embodiment, the feeding cylinder 30 is electrically connected to the external electrical control system. The feeding box 31 has a device for supplying raw materials. The feeding box 31 slides on the feeding work plate 32 so that the raw material to be pressed can be placed into the mold cavity in the lower die punch assembly 41 for pressing. After the material is filled, the feeding device retracts and the hydraulic press starts to work. During the second filling, the feeding device also acts as a pusher while filling, making it a multi-purpose device.

[0036] The working principle of this utility model is as follows: First, after installing all the components, the feeding device feeds material into the lower die assembly 41. Then, the main cylinder presses downwards, and the upper die assembly 40 and the lower die assembly 41 close together to press the raw material into shape. After pressing, the core-pulling cylinder in the core assembly 42 drives the core rod to be pulled out downwards. Then, the piston rod of the demolding cylinder 16 outputs downwards, driving the floating beam 14 to move downwards. The floating beam 14 separates from the outer wall of the annulus in the lower die assembly 41, so that the pressed finished product separates from the lower die assembly 41 until it is exposed. At the same time, when the floating beam 14 moves to the lower limit nut 232, it will also stop running. After the feeding box 31 in the rear feeding device is filled with the raw material to be pressed, it enters the pressing area along the feeding work plate 32, pushes out the pressed finished product, and continues to feed the lower die punch assembly 41. At the same time, the core-pulling cylinder will also drive the core rod upward for the next pressing. When different molds need to be changed, the position of the lower limit nut 232 can be adjusted according to the height of the mold. The positions of the upper limit nut 231 and the lower limit nut 232 together limit the movement distance of the floating beam 14, so as to better limit the floating beam 14 according to different mold heights, and finally make the pressed finished product leave the lower die punch assembly 41.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An adjustable mechanical limiting device suitable for powder press, comprising a hydraulic machine composed of an upper beam (11), a movable beam (12), a floating beam (14) and a lower beam (15) arranged in sequence from top to bottom on four upright columns (13), the floating beam (14) is slidingly connected to the four upright columns (13), a main cylinder (10) is fixed to the upper beam (11) and penetrates through the movable beam (12), and a stripping cylinder (16) is arranged on both sides of the floating beam (14), the stripping cylinder (16) is fixed to the lower plane of the upper beam (11), characterized in that, The floating beam (14) is provided with a feeding device on one side, and a plurality of adjustable mechanical limiting devices (20) are arranged between the floating beam (14) and the lower beam (15).

2. An adjustable mechanical stop device for a powder press according to claim 1, characterized in that: The adjustable mechanical limiting device (20) comprises a limiting nut (23) and a limiting screw (24), the limiting nut (23) comprises an upper limiting nut (231) and a lower limiting nut (232), the limiting screw (24) is threadedly connected with the upper limiting nut (231) and the lower limiting nut (232) respectively, the limiting screw (24) penetrates the floating beam (14), the upper limiting nut (231) moves up and down on the segment of the limiting screw (24) on the upper surface of the floating beam (14), and the lower limiting nut (232) moves up and down on the segment of the limiting screw (24) between the floating beam (14) and the lower beam (15).

3. An adjustable mechanical stop device for a powder press according to claim 2, characterized in that: The limiting nut (23) is provided with a clamping groove (233) on one side in the radial direction, and the clamping groove (233) is used for clamping the thread on the limiting screw (24).

4. An adjustable mechanical stop device for a powder press according to claim 2, wherein: The bottom of the limiting screw (24) is provided with a fixing device, the fixing device comprises a fixing seat (21) and a fixing seat locking nut (22), the fixing seat locking nut (22) is located above the fixing seat (21), the bottom of the limiting screw (24) is threadedly connected with the fixing seat (21) and the fixing seat locking nut (22), and the fixing seat (21) is fixed on the upper surface of the lower beam (15).

5. An adjustable mechanical stop device for a powder press according to claim 1, wherein: The adjustable mechanical limiting device (20) is two.

6. An adjustable mechanical stop device for a powder press according to claim 1, wherein: The feeding device comprises a feeding cylinder (30), a feeding box (31) and a feeding work plate (32), the feeding work plate (32) is fixedly arranged on the upper surface of the floating beam (14), the feeding box (31) is slidably arranged on the feeding work plate (32), and the feeding box (31) is connected with the output end of the feeding cylinder (30).

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