Punching mechanism of thermal forming die

Abstract

The utility model provides a punching mechanism of a thermal forming die, and belongs to the technical field of auxiliary punching equipment of the thermal forming die. Comprising a connecting assembly, a punching assembly and a punching guide assembly. The connecting assembly is used for connecting the punching assembly and the punching guide assembly; the punching assembly is used for punching the thermal forming die; the punching guide assembly is used for guiding the punching assembly in the punching process. The utility model provides a hot die oil cylinder punching mechanism. The hot die oil cylinder punching mechanism comprises a connecting assembly, an oil cylinder punching assembly and a punching guide assembly. The connecting assembly is connected with an existing structure of a punching machine table, so that portable assembly and disassembly are achieved; precise positioning is completed through the punching guide assembly; and the oil cylinder punching assembly is connected with oil inlet and outlet path equipment on the punching machine table, so that the oil cylinder punching assembly is controlled to be ejected or retreated through the punching machine table, punching is completed before the thermal forming die is cooled, and machining of the laser positioning hole of the thermal forming die is completed.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary punching equipment for thermoforming molds, and relates to a punching mechanism for thermoforming molds. Background Technology

[0002] In the existing technology, when producing thermoforming molds, the following steps are usually taken: first, the product lines and holes of the thermoforming mold are basically shaped to form a semi-finished mold; then, the holes are processed by laser engraving to complete the preparation of the thermoforming mold.

[0003] When using laser cutting to process holes, a flip hole is formed in the waste area for laser cutting positioning; however, due to differences in production conditions, the parts produced in each batch may have some differences, which means that adjustments are required each time laser cutting is performed. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic cylinder punching mechanism for thermoforming molds that can perform positioning hole processing during the thermoforming mold production process, so as to improve the accuracy and quality of thermoforming molds during subsequent laser processing and to improve the processing efficiency of laser processing.

[0005] This utility model provides a punching mechanism for a thermoforming mold, including a connecting component, a punching component, and a punching guide component;

[0006] The connecting component is used to connect the punching component and the punching guide component;

[0007] The punching assembly is used to punch holes in the thermoforming mold;

[0008] The punching guide assembly is used to guide the punching assembly during the punching process.

[0009] Furthermore, the connecting assembly includes a mold base, a connecting rod, a guide block, and a guide plate;

[0010] The mold base is provided with a cavity for installing punching components, connecting rods, guide blocks, guide plates and limiting plates;

[0011] The connecting rod is used to connect the punching assembly and the guide block;

[0012] A guide plate is installed on the end of the guide block away from the connecting rod.

[0013] Furthermore, the mold base includes a mold base body and a first chamber, a connecting groove, and a guide groove disposed on the mold base body;

[0014] The first chamber is used to install the punching assembly;

[0015] One end of the connecting groove is connected to the first chamber, and the other end of the connecting groove extends horizontally to the outer wall of the mold base body.

[0016] One end of the guide groove is connected to the first chamber, and the other end of the guide groove extends vertically to the outer wall of the mold base body.

[0017] The guide plate is installed in the guide groove and can be displaced vertically within the guide groove.

[0018] Furthermore, the guide plate is provided in two sets, with each set of guide plates being disposed on two parallel end faces of the guide block.

[0019] Furthermore, the cross-sectional dimension of the guide plate is smaller than the cross-sectional dimension of the guide block used to mount the guide plate, and the guide plate and the guide block are connected to each other to form a slider structure;

[0020] The guide groove is provided with a slide groove for interlocking with the slider structure, and the slider structure and the slide groove cooperate to form a guide slide rail structure.

[0021] Furthermore, a second limiting boss is provided on the periphery of the guide block;

[0022] The connecting component also includes a limiting plate;

[0023] The mold base also includes a first limiting boss, which is disposed on the lower inner end face of the first chamber and on one side of the guide groove, for mounting a limiting plate;

[0024] The second limiting boss cooperates with the limiting plate to limit the displacement range of the punching assembly.

[0025] Furthermore, the punching assembly includes a connecting plate, a hydraulic cylinder, an oil pipe, and an inlet / outlet oil connector;

[0026] The fixed end of the cylinder is fixedly connected to the connecting plate, and the driving end of the cylinder is fixedly connected to the end of the connecting rod away from the guide block.

[0027] The connecting plate is fixedly connected to the mold base;

[0028] One end of the oil pipe is connected to the oil cylinder, and the other end of the oil pipe is equipped with an inlet / outlet oil connector.

[0029] Furthermore, the punching guide assembly includes a fixed base, a punch, a die, an upper die insert, and a lower die insert;

[0030] One end of the fixed seat is fixedly connected to the guide block, and the other end of the fixed seat is fixedly connected to the punch.

[0031] A die is installed on the end of the punch away from the fixed seat;

[0032] A first mounting hole for mounting a punch is provided at the central axis of the upper die insert, and a second mounting hole for mounting a die is provided at the central axis of the lower die insert.

[0033] The upper mold insert and the lower mold insert are fixedly connected to each other, and the central axis of the upper mold insert and the central axis of the lower mold insert coincide with each other;

[0034] The punch and die work together to achieve punching.

[0035] Furthermore, a first guide sleeve is provided in the first mounting hole of the upper die insert, and a second guide sleeve is provided in the second mounting hole of the lower die insert, and the punch slides within the first guide sleeve and the second guide sleeve.

[0036] Furthermore, the die cavity is configured as a square structure, and the second mounting hole and the die cavity are fitted with an interference fit;

[0037] A hole is provided on the central axis of the die to fit the punch clearance.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] (1) This utility model provides a hot mold cylinder punching mechanism, including a connecting component, a cylinder punching component and a punching guide component; the connecting component is connected to the existing structure of the stamping machine, realizing portable loading and unloading; the punching guide component completes precise positioning; and the cylinder punching component is connected to the inlet and outlet oil circuit equipment on the stamping machine, so as to control the ejection or retraction of the cylinder punching component through the stamping machine, so as to complete the punching before the hot forming mold cools down, so as to complete the processing of the laser positioning hole of the hot forming mold.

[0040] (2) In this utility model, a first set of guiding structures is formed by setting a guide block, a guide plate and a guide groove to cooperate with each other; a second set of guiding structures is formed by setting a first guide sleeve on the upper die insert and a second guide sleeve on the lower die insert; by setting two sets of guiding structures, precise positioning and guidance are achieved, thereby ensuring the accuracy of punching.

[0041] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0042] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0043] Figure 1 This is a schematic diagram of the overall structure of a punching mechanism for a thermoforming mold in an embodiment of this utility model;

[0044] Figure 2 yes Figure 1 A schematic diagram showing the cross-section of the connecting component;

[0045] Figure 3 yes Figure 2 Schematic diagram of the cross-section of the middle mold base;

[0046] Figure 4 yes Figure 1 Schematic diagram of the punching assembly for the hydraulic cylinder;

[0047] Figure 5 yes Figure 1 A schematic diagram of the cross-section of the punched guide assembly.

[0048] in:

[0049] 1. Connecting assembly, 1.1. Mold base, 1.1.1. Mold base body, 1.1.2. First chamber, 1.1.3. Connecting groove, 1.1.4. First limiting boss, 1.1.5. Guide groove, 1.2. Connecting rod, 1.3. Guide block, 1.4. Guide plate, 1.5. Limiting plate, 2. Hydraulic cylinder punching assembly, 2.1. Mounting plate, 2.2. Hydraulic cylinder, 2.3. Oil pipe, 2.4. Oil passage block, 2.5. Inlet and outlet oil connector, 3. Punching guide assembly, 3.1. Fixed seat, 3.2. Punch, 3. Square die, 3.4. Upper die insert, 3.5. Lower die insert. Detailed Implementation

[0050] To make the above-mentioned objectives, features, and advantages of this utility model clearer and easier to understand, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that the accompanying drawings of this utility model are all in a simplified form and use non-precise proportions, and are only used to facilitate and clearly assist in illustrating the implementation of this utility model; the "several" mentioned in this utility model are not limited to the specific number shown in the examples in the drawings; the directions or positional relationships indicated by "front," "middle," "rear," "left," "right," "up," "down," "top," "bottom," and "middle" mentioned in this utility model are all based on the directions or positional relationships shown in the accompanying drawings of this utility model, and do not indicate or imply that the device or component referred to must have a specific orientation, nor should they be construed as limitations on this utility model.

[0051] Example:

[0052] See Figure 1 As shown, the present invention provides a thermoforming mold punching mechanism, which includes a connecting component 1, a hydraulic cylinder punching component 2, and a punching guide component 3.

[0053] The connecting component 1 is used to connect the hydraulic cylinder punching component 2 and the punching guide component 3;

[0054] The hydraulic cylinder punching assembly 2 is used to punch holes in the thermoforming mold;

[0055] The punching guide component 3 is used to guide the hydraulic cylinder punching component 2 during the punching process.

[0056] Preferred, see Figure 2 and Figure 3 As shown, the connecting assembly 1 includes a mold base 1.1, a connecting rod 1.2, a guide block 1.3, a guide plate 1.4, and a limiting plate 1.5;

[0057] The mold base 1.1 includes a mold base body 1.1.1 and a first chamber 1.1.2, a connecting groove 1.1.3, a first limiting boss 1.1.4, and a guide groove 1.1.5 disposed on the mold base body 1.1.1. The first chamber 1.1.2 is used to install the hydraulic cylinder punching assembly 2. One end of the connecting groove 1.1.3 is connected to the first chamber 1.1.2, and the other end of the connecting groove 1.1.3 extends horizontally to the outer wall of the mold base body 1.1.1. The first limiting boss 1.1.4 is disposed on the lower inner end face of the first chamber 1.1.2 and on one side of the guide groove 1.1.5, and is used to install the limiting plate 1.5. One end of the guide groove 1.1.5 is connected to the first chamber 1.1.2, and the other end of the guide groove 1.1.5 extends vertically to the outer wall of the mold base body 1.1.1.

[0058] The connecting rod 1.2 is used to connect the hydraulic cylinder punching assembly 2 and the guide block 1.3;

[0059] A guide plate 1.4 is installed on the end of the guide block 1.3 away from the connecting rod 1.2;

[0060] The guide plate 1.4 is installed in the guide groove 1.1.5 and can be displaced vertically within the guide groove 1.1.5.

[0061] More preferably, the guide plate 1.4 is provided in two sets, with each set of guide plates 1.4 respectively disposed on two parallel end faces of the guide block 1.3.

[0062] More preferably, the cross-sectional dimension of the guide plate 1.4 is smaller than the cross-sectional dimension of the guide block 1.3 used to install the guide plate 1.4, so that the guide plate 1.4 and the guide block 1.3 are connected to each other to form a slider structure;

[0063] The guide groove 1.1.5 is provided with a slide groove for interlocking with the slider structure, and the slider structure and the slide groove cooperate to form a guide slide rail structure.

[0064] In a further preferred embodiment, a second limiting boss is provided on the periphery of the guide block 1.3 for cooperating with the limiting plate 1.5. By setting the distance between the lower end face of the second limiting boss and the upper end face of the limiting plate 1.5, the displacement stroke of the guide block 1.3 in the vertical direction is limited, so as to prevent the guide block 1.3 from detaching after the connecting rod 1.2 and the hydraulic cylinder punching assembly 2 become loose.

[0065] Preferred, see Figure 4 As shown, the hydraulic cylinder punching assembly 2 includes a connecting plate 2.1, a hydraulic cylinder 2.2, an oil pipe 2.3, an oil passage block 2.4, and an inlet / outlet oil connector 2.5;

[0066] The fixed end of the hydraulic cylinder 2.2 is fixedly connected to the connecting plate 2.1, and the driving end of the hydraulic cylinder 2.2 is fixedly connected to the end of the connecting rod 1.2 away from the guide block 1.3;

[0067] The connecting plate 2.1 is fixedly connected to the mold base body 1.1.1;

[0068] One end of the oil pipe 2.3 is connected to the oil cylinder 2.2, and the other end of the oil pipe 2.3 is equipped with an oil inlet / outlet connector 2.5;

[0069] The oil inlet / outlet connector 2.5 is connected to the machine base used for thermoforming the mold via the oil passage block 2.4.

[0070] Preferred, see Figure 5 As shown, the punching guide assembly 3 includes a fixed base 3.1, a punch 3.2, a die 3.3, an upper die insert 3.4, and a lower die insert 3.5;

[0071] One end of the fixed base 3.1 is fixedly connected to the guide block 1.3, and the other end of the fixed base 3.1 is fixedly connected to the punch 3.2;

[0072] A die 3.3 is mounted on the end of the punch 3.2 away from the fixed base 3.1;

[0073] A first mounting hole for mounting the punch 3.2 is provided at the central axis of the upper die insert 3.4, and a second mounting hole for mounting the die 3.3 is provided at the central axis of the lower die insert 3.5.

[0074] The upper mold insert 3.4 and the lower mold insert 3.5 are fixedly connected to each other, and the central axis of the upper mold insert 3.4 and the central axis of the lower mold insert 3.5 coincide with each other;

[0075] The punch 3.2 and the die 3.3 work together to achieve punching.

[0076] In a further preferred embodiment, a first guide sleeve is provided in the first mounting hole of the upper die insert 3.4, and a second guide sleeve is provided in the second mounting hole of the lower die insert 3.5. The punch 3.2 slides within the first and second guide sleeves to achieve punching.

[0077] More preferably, the die 3.3 is configured as a square structure, and the second mounting hole and the die 3.3 are preferably interference fit to prevent rotation or offset during punching; a hole is provided on the central axis of the die 3.3 to be clearance fit with the punch 3.2.

[0078] Experimental example:

[0079] Taking the punching of a 1.1mm thick sheet of 22MnB5-AlSi 60 / 60 material as an example, the specific process is as follows:

[0080] The sheet metal is placed in a heating furnace and heated for 300 seconds to reach 930°C.

[0081] The heated sheet metal is placed into a thermoforming mold and formed under a pressure of 350T on a stamping press, and held under pressure for 8 seconds.

[0082] The present invention provides a thermoforming mold punching mechanism for punching laser positioning holes during the pressure holding state.

[0083] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A punching mechanism for a thermoforming die, characterized in that, It includes a connecting component (1), a punching component (2), and a punching guide component (3); The connecting component (1) is used to connect the punching component (2) and the punching guide component (3); The punching assembly (2) is used to punch holes in the thermoforming mold; The punching guide assembly (3) is used to guide the punching assembly (2) during the punching process.

2. The thermoforming die punching mechanism according to claim 1, characterized in that, The connecting assembly (1) includes a mold base (1.1), a connecting rod (1.2), a guide block (1.3), and a guide plate (1.4); The mold base (1.1) is provided with a cavity for installing the punching assembly (2), connecting rod (1.2), guide block (1.3), guide plate (1.4) and limiting plate (1.5); The connecting rod (1.2) is used to connect the punching assembly (2) and the guide block (1.3); A guide plate (1.4) is installed on the end of the guide block (1.3) away from the connecting rod (1.2).

3. The thermoforming die punching mechanism according to claim 2, characterized in that, The mold base (1.1) includes a mold base body (1.1.1) and a first chamber (1.1.2), a connecting groove (1.1.3), and a guide groove (1.1.5) disposed on the mold base body (1.1.1); The first chamber (1.1.2) is used to install the punching assembly (2); One end of the connecting groove (1.1.3) is connected to the first chamber (1.1.2), and the other end of the connecting groove (1.1.3) extends horizontally to the outer wall of the mold base body (1.1.1). One end of the guide groove (1.1.5) is connected to the first chamber (1.1.2), and the other end of the guide groove (1.1.5) extends vertically to the outer wall of the mold base body (1.1.1). The guide plate (1.4) is installed in the guide groove (1.1.5) and can be displaced vertically within the guide groove (1.1.5).

4. The thermoforming die punching mechanism according to claim 3, characterized in that, The guide plate (1.4) is provided in two sets, with each set of guide plates (1.4) being set on two parallel end faces of the guide block (1.3).

5. The thermoforming die punching mechanism according to claim 4, characterized in that, The cross-sectional dimension of the guide plate (1.4) is smaller than the cross-sectional dimension of the guide block (1.3) used to install the guide plate (1.4). The guide plate (1.4) and the guide block (1.3) are connected to each other to form a slider structure. The guide groove (1.1.5) is provided with a slide groove for interlocking with the slider structure, and the slider structure and the slide groove cooperate to form a guide slide rail structure.

6. The thermoforming die punching mechanism according to claim 2, characterized in that, A second limiting boss is also provided on the periphery of the guide block (1.3); The connecting component (1) further includes a limiting plate (1.5); The mold base (1.1) further includes a first limiting boss (1.1.4), which is disposed on the inner lower end face of the first chamber (1.1.2) and on one side of the guide groove (1.1.5) for mounting the limiting plate (1.5); The second limiting boss cooperates with the limiting plate (1.5) to limit the displacement range of the punching assembly (2).

7. The thermoforming die punching mechanism according to any one of claims 2-6, characterized in that, The punching assembly (2) includes a connecting plate (2.1), a hydraulic cylinder (2.2), an oil pipe (2.3), and an inlet / outlet oil connector (2.5); The fixed end of the hydraulic cylinder (2.2) is fixedly connected to the connecting plate (2.1), and the driving end of the hydraulic cylinder (2.2) is fixedly connected to the end of the connecting rod (1.2) away from the guide block (1.3); The connecting plate (2.1) is fixedly connected to the mold base (1.1); One end of the oil pipe (2.3) is connected to the oil cylinder (2.2), and the other end of the oil pipe (2.3) is equipped with an oil inlet / outlet connector (2.5).

8. The thermoforming die punching mechanism according to claim 7, characterized in that, The punching guide assembly (3) includes a fixed base (3.1), a punch (3.2), a die (3.3), an upper die insert (3.4), and a lower die insert (3.5); One end of the fixed seat (3.1) is fixedly connected to the guide block (1.3), and the other end of the fixed seat (3.1) is fixedly connected to the punch (3.2); A die (3.3) is mounted on the end of the punch (3.2) away from the fixed base (3.1); The upper die insert (3.4) has a first mounting hole for mounting the punch (3.2) through the center axis, and the lower die insert (3.5) has a second mounting hole for mounting the die cavity (3.3) through the center axis. The upper mold insert (3.4) and the lower mold insert (3.5) are fixedly connected to each other, and the central axis of the upper mold insert (3.4) coincides with the central axis of the lower mold insert (3.5). The punch (3.2) and the die (3.3) work together to achieve punching.

9. The thermoforming die punching mechanism according to claim 8, characterized in that, A first guide sleeve is provided in the first mounting hole of the upper die insert (3.4), and a second guide sleeve is provided in the second mounting hole of the lower die insert (3.5). The punch (3.2) slides within the first guide sleeve and the second guide sleeve.

10. The thermoforming die punching mechanism according to claim 9, characterized in that, The die (3.3) is configured as a square structure, and the second mounting hole and the die (3.3) are fitted with an interference fit; A hole is provided on the central axis of the die (3.3) to fit the punch (3.2) with clearance.

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