Die quick change mechanism for a press

Abstract

The utility model relates to a die quick change mechanism for press, including the bottom plate fixed on the workbench of press, the bottom plate is apart from each other and is provided with a set of positioning assembly, and the space of the die plate is left between two positioning assemblies, and the positioning assembly includes the upper pressing plate and the lower side plate, and the movable pressing plate body is slidingly inserted in the inside of lower side plate, the bottom plate is apart from each other and is provided with a set of hinged seat, and the horizontal bidirectional screw rod is arranged between the hinged seat, and the screw nut seat is connected to the positive and negative screw thread of bidirectional screw rod, and each screw nut seat and corresponding movable pressing plate body outer end are connected through L type rod, owing to the cooperation of positioning assembly, L type rod and screw rod drive mechanism, the movable pressing plate body in the positioning assembly moves towards through the control of the rotation of bidirectional screw rod, and the die plate is extruded and positioned, and the clamping of die plate is completed, and simultaneously, the upper die on the die plate is aligned with the lower die of press slider bottom, and the device is suitable for industrial production and has strong practicality.

Description

Technical Field

[0001] This utility model belongs to the technical field of mold changing fixtures for presses, and particularly relates to a quick mold changing mechanism for presses. Background Technology

[0002] A patent application (application number 2022234306532) entitled "A Mechanism for Easy Mold Replacement in a Press" is disclosed in the existing Chinese patent database. This mechanism includes a worktable, with an installation component on one side of the upper surface of the worktable, support legs fixedly installed at the four corners of the lower surface of the worktable, a support plate fixedly installed on one side of the upper surface of the worktable, an extension plate fixedly installed on one side of the support plate, and a press fixedly installed on the upper surface of the extension plate. This invention, through the installation component, with the cooperation of a pull rod and a cavity, and the limiting effect of a fixing rod and a hollow cylinder, allows for easy replacement of the mold. The threaded rod and threaded block ensure that the mold is moved away from the press during replacement, guaranteeing greater safety for workers and preventing accidental pressure on their hands due to equipment malfunction. The positioning rod and positioning plate prevent pressure from being applied to the outside of the mold due to press deviation caused by prolonged use, thus avoiding product defects.

[0003] In the existing technology, the mold changing of the press is time-consuming, and the mold needs to be re-centered after the change to ensure the alignment between the upper and lower molds. Therefore, this paper aims to propose a quick mold changing mechanism for presses, which can quickly change the mold plate and quickly complete the alignment of the upper and lower mold centers during the mold plate positioning process, thereby improving the mold plate clamping speed and stamping efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is how to quickly change the lower die in a press and align the lower die with the center of the upper die after the change. In order to improve its shortcomings, this utility model provides a quick die change mechanism for a press.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A quick-change mold mechanism for a press includes a base plate fixed to the press worktable. A set of positioning components are horizontally spaced on the base plate, with space between the two positioning components for placing a mold plate. Each positioning component includes an upper pressure plate and a lower side plate stacked vertically. A movable pressure plate body is slidably inserted into the inner side of the lower side plate. A set of hinge seats are spaced on the base plate, and a horizontal bidirectional lead screw is provided between the hinge seats. A lead screw nut seat is connected to both the positive and negative threads of the bidirectional lead screw. Each lead screw nut seat is connected to the outer end of the corresponding movable pressure plate body through an L-shaped rod.

[0006] Compared with the prior art, the beneficial effects of this utility model are as follows: due to the coordinated arrangement between the positioning component, the L-shaped rod and the lead screw transmission mechanism, by controlling the rotation of the bidirectional lead screw, the movable pressure plate body in the positioning component moves towards each other, extruding and positioning the mold plate, completing the clamping of the mold plate, and at the same time aligning the upper mold on the mold plate with the lower mold at the bottom of the press slide for stamping. This device is suitable for industrial production and has strong practicality.

[0007] As a preferred embodiment, the movable pressure plate body includes an insertion section that is inserted into the lower side plate, and a pressure plate section is integrally provided at the inner end of the insertion section. A horizontal guide groove is provided on the bottom plate, and a guide strip that slides and engages with the guide groove is integrally provided at the bottom of the insertion section.

[0008] As a preferred embodiment, positioning plates are fixed to both the front and rear sides of the upper pressure plate, and the lower inner side of the positioning plates is fitted to the front and rear sides of the movable pressure plate body.

[0009] As a preferred embodiment, the free end of the vertical section of the L-shaped rod is fixedly connected to the front of the lead screw nut seat, and the free end of the horizontal section of the L-shaped rod is fixedly connected to the outer end face of the insertion section of the movable pressure plate body.

[0010] As a preferred embodiment, the inner end face of the pressure plate segment is configured as a wedge-shaped surface, and the two ends of the mold plate are correspondingly configured as wedge-shaped surfaces.

[0011] As a preferred embodiment, the upper pressure plate and the lower side plate are fixed together to the base plate by bolts. Attached Figure Description

[0012] Figure 1 This is a front structural diagram of the present invention.

[0013] Figure 2 This is a top view of the structure of this utility model.

[0014] In the diagram: 1. Base plate, 2. Upper pressure plate, 3. Lower side plate, 4. Movable pressure plate body, 401. Insertion section, 402. Pressure plate section, 5. Hinge seat, 6. Two-way lead screw, 7. Lead screw nut seat, 8. L-shaped rod, 801. Vertical section, 802. Horizontal section, 9. Guide groove, 10. Positioning piece, 11. Mold plate. Detailed Implementation

[0015] The technical solution of this application will be further described below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1-2The diagram shows a quick-change mold mechanism for a press, comprising a base plate 1 fixed to the press worktable. A set of positioning components are horizontally spaced on the base plate 1, with space between the positioning components for placing a mold plate 11. Each positioning component includes an upper pressure plate 2 and a lower side plate 3 stacked vertically. A movable pressure plate body 4 is slidably inserted into the inner side of the lower side plate 3. A set of hinge seats 5 are spaced on the base plate 1, with horizontal bidirectional lead screws 6 positioned between the hinge seats 5. Lead screw nut seats 7 are connected to both the positive and negative threads of the bidirectional lead screws 6. Each lead screw nut seat 7 is connected to the outer end of the corresponding movable pressure plate body 4 via an L-shaped rod 8. The movable pressure plate body 4 includes an insertion section 401 inserted into the lower side plate 3. A pressure plate section 402 is integrally formed at the inner end of the insertion section 401. A horizontal guide groove 9 is formed on the base plate 1, and a guide strip (not shown in the diagram) is integrally formed at the bottom of the insertion section 401, slidingly engaging with the guide groove 9. Positioning pieces 10 are fixedly connected to both the front and rear sides of the upper pressure plate 2. The lower inner side of the positioning pieces 10 is fitted to the front and rear sides of the movable pressure plate body 4. The free end of the vertical section 801 of the L-shaped rod 8 is fixedly connected to the front of the lead screw nut seat 7, and the free end of the horizontal section 802 of the L-shaped rod 8 is fixedly connected to the outer end face of the insertion section 401 of the movable pressure plate body 4. The inner end face of the pressure plate section 402 is set as a wedge-shaped surface, and the two ends of the mold plate 11 are correspondingly set as wedge-shaped surfaces. The upper pressure plate 2 and the lower side plate 3 are fixed together to the base plate 1 by bolts.

[0017] In operation, the operator first slides the mold plate 11 with the upper mold from the front between the two positioning components, and tightens the positioning pieces 10 on the front and rear sides of the upper pressure plate 2 to ensure the positioning of the mold plate 11 in the front-rear direction. Then, the operator controls the bidirectional lead screw 6 to rotate. Through the connection between the lead screw nut seat 7, the L-shaped rod 8 and the insertion section 401 of the movable pressure plate body 4, the pressure plate section 402 of the movable pressure plate body 4 is driven to move towards each other, and the mold plate 11 is centered and pressed, thereby completing the centering and positioning of the mold plate 11 in the left-right direction, so that the lower mold on the upper surface of the mold plate 11 is aligned with the upper mold below the slider, and the stamping process of the product is completed.

[0018] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A quick-change mold mechanism for a press, characterized in that: The device includes a base plate (1) fixed to the press workbench. A set of positioning components are horizontally spaced on the base plate (1), and a space is left between the two positioning components for placing the mold plate (11). The positioning components include an upper pressure plate (2) and a lower side plate (3) stacked on top of each other. A movable pressure plate body (4) is slidably inserted into the inner side of the lower side plate (3). A set of hinge seats (5) are spaced on the base plate (1), and a horizontal double-acting screw (6) is provided between the hinge seats (5). A screw nut seat (7) is connected to the positive and negative threads of the double-acting screw (6). Each screw nut seat (7) is connected to the outer end of the corresponding movable pressure plate body (4) through an L-shaped rod (8).

2. The quick-change mechanism for a mold in a press according to claim 1, characterized in that: The movable pressure plate body (4) includes an insertion section (401) inserted into the lower side plate (3), and a pressure plate section (402) integrally provided at the inner end of the insertion section (401). A horizontal guide groove (9) is provided on the bottom plate (1), and a guide strip integrally provided at the bottom of the insertion section (401) that slides and engages with the guide groove (9).

3. The quick-change mechanism for a mold in a press according to claim 2, characterized in that: Positioning pieces (10) are fixed to both the front and rear sides of the upper pressure plate (2), and the lower inner side of the positioning piece (10) is attached to the front and rear sides of the movable pressure plate body (4).

4. The quick-change mechanism for a mold in a press according to claim 3, characterized in that: The free end of the vertical section (801) of the L-shaped rod (8) is fixedly connected to the front of the lead screw nut seat (7), and the free end of the horizontal section (802) of the L-shaped rod (8) is fixedly connected to the outer end face of the insertion section (401) of the movable pressure plate body (4).

5. A quick-change mechanism for a mold in a press according to claim 4, characterized in that: The inner end face of the pressure plate section (402) is set as a wedge-shaped surface, and the two ends of the mold plate (11) are correspondingly set as wedge-shaped surfaces.

6. A quick-change mechanism for a mold for a press according to any one of claims 1-5, characterized in that: The upper pressure plate (2) and the lower side plate (3) are fixed together on the base plate (1) by bolts.

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