A mold structure capable of rapidly switching the state of a mold punch station

Abstract

The utility model relates to die punch technology field discloses a kind of die structure of quick switching die punch station state, including press upper mesa, upper die holder, lower die holder and lower die holder, and upper and lower die holder are respectively installed on the upper and lower mesa of press, and upper and lower die holder are controlled to press material punch forming by driving structure, and the upper die holder is provided with punch assembly, and the punch assembly includes punch, punch clamp plate, punch backing plate, and punch clamp plate is fixed on punch backing plate by bolt, and punch is provided on punch clamp plate;The punch assembly is also provided with the adjusting structure of control punch moves along the direction of stamping, and the utility model can not be disassembled from punch press machine under the condition that punch die is not opened upper and lower die of die and disassembled punch and relevant components, reach the purpose of realizing the partial hole and holeless of stamping part by quick switching punch station state.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, specifically to a die structure that allows for rapid switching of die punch station states. Background Technology

[0002] Because some stamped parts for the vehicle body correspond to different configurations of the same model or other body requirements, there are differences in the presence and absence of holes in the same location of some stamped parts. The examples of stamped parts with and without holes are as follows: Figure 1 , 2 As shown (currently in production stamping parts).

[0003] To achieve the aforementioned goals of having both holes and not having holes, it would be wasteful to create two sets of punching dies with essentially identical structures. Currently, to achieve this, on-site operators need to remove the punching die from the press, install or disassemble the corresponding punch assembly, and then reinstall the die on the press.

[0004] Traditional installation methods are time-consuming and labor-intensive, and each installation and disassembly carries the risk of assembly errors and loss due to improper storage of parts. Furthermore, the stamping machine is idle when switching modes, resulting in increased ineffective working time for the equipment. In particular, large molds require heavy-duty overhead cranes for lifting and a spacious operating area. Utility Model Content

[0005] This invention provides a mold structure for quickly switching the state of the punch station. This invention can achieve the purpose of quickly switching the punch station state to realize the stamping part having a hole or not having a hole without disassembling the stamping mold from the stamping machine tool, and without opening the upper and lower molds and disassembling the punch and related components.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] A mold structure for quickly switching the state of the die punch station includes a press upper table, an upper die holder, a lower die holder, and a lower die base. The upper and lower die holders are respectively installed on the upper and lower tables of the press. The upper and lower die holders are controlled by a drive structure to stamp the blank into shape. A stamping assembly is provided on the upper die holder. The stamping assembly includes a punch, a punch clamping plate, and a punch backing plate. The punch clamping plate is fixed to the punch backing plate by bolts. The punch clamping plate is provided with a punch. The punch assembly is also equipped with an adjustment structure to control the movement of the punch along the stamping direction.

[0008] In one specific embodiment, the adjustment structure is used to adjust the working position of the punch in the working direction.

[0009] In a specific embodiment, the adjustment structure includes a wedge block, a wedge block fixing block, a guide rod, and a pull rod spring; a guide rod is provided at the tail of the punch pad, and a pull rod guide sleeve is sleeved on the guide rod, allowing the main pull rod to move along the pull rod guide sleeve; an insertable wedge block is provided between the punch pad and the pull rod guide sleeve, and a wedge block fixing block is used to fix the wedge block, allowing the wedge block to move along the plane of the wedge block fixing block.

[0010] In a specific embodiment, a pull rod spring is also sleeved between the guide rod and the pull rod sleeve, which is used to reset the guide rod and thus push the punch to move along the direction of the guide rod.

[0011] In one specific embodiment, the tail of the pull rod guide sleeve is provided with a pull rod washer and a pull rod bolt.

[0012] This die structure integrates an adjustable wedge-shaped quick-change mechanism on the punch assembly, enabling rapid switching between two stamping states: "partially perforated" and "partially non-perforated." The main advantages are as follows:

[0013] 1. The switching speed is greatly improved. The traditional method requires removing the entire mold from the machine tool, disassembling and reassembling the punch, and then resetting it, which often takes several hours. This solution only requires operating the wedge block and tie rod on the upper mold base to control the position of the punch. There is no need for complete disassembly, and the switching time can be shortened to a few minutes.

[0014] 2. The need for heavy-duty overhead cranes to lift and disassemble large-tonnage molds has been eliminated; on-site operators only need to use simple tools (such as handles and wrenches) to tighten and loosen wedge bolts, reducing reliance on technical skills and physical strength; human resource input has been reduced, and personnel training costs and the risk of misoperation have been lowered.

[0015] 3. High switching accuracy and reliable repeatability: The wedge block guides the punch in the stamping direction, and the pull rod spring provides automatic reset force, so that the punch can be stably locked in the preset position after switching. Compared with the tolerance accumulation and assembly error caused by traditional multiple assembly, this structure has good positioning repeatability and higher punching size and position accuracy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 The diagram shown is a schematic of the structure of a traditional die punching tool.

[0018] Figure 2 The diagram shown is a structural schematic of the upper die after the traditional die punching process is completed.

[0019] Figure 3 The diagram shows the structure of the punch assembly in a traditional mold.

[0020] Figure 4 The diagram shown is a schematic diagram of a mold structure embodiment 1 for quickly switching the state of the mold punch station;

[0021] Figure 5 The diagram shown is a schematic diagram of the upper mold after opening, which is a mold structure for quickly switching the state of the mold punch station. (Example 1)

[0022] Figure 6 The diagram shows a schematic of the punch assembly structure in a mold structure that allows for rapid switching of the punch station status.

[0023] Figure 7 The diagram shows the structure after pressing and forming (with and without holes).

[0024] Figure 8 The diagram shown is an exploded view of the punch assembly structure in a mold structure that allows for rapid switching of the punch station status. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] The following description, in conjunction with the accompanying drawings, provides a specific embodiment of the present invention, "A mold structure for quickly switching the state of the mold punch station," but the present invention is not limited to this embodiment.

[0027] Example 1

[0028] The traditional method is as follows: Figure 1 , 2 As shown in Figure 3, the working principle and operation procedure are detailed below:

[0029] First, remove the stamping dies (2, 3, 4) from the stamping machine (1, 5). Then, open the upper and lower die bases of the die and rotate the upper die base 2 and the blank holder 3 180° (bottom side down). Then, use a gantry crane to lift the blank holder 3 out of the upper die base 2. At this point, the punch and related components 6 can be seen.

[0030] Depending on the required state of the stamped parts, install or remove the corresponding punch 61, punch fixing plate 62 and punch pad 63. If disassembly is required, all relevant components, including screws and pins, should be placed in the temporary parts storage box 7 in a timely manner to prevent the temporary disassembly of parts from being lost.

[0031] Finally, following the reverse process of the above operation: hoist the upper mold base and the pressure body, flip the upper mold as a whole, close the upper and lower molds, and install the mold on the stamping machine for production.

[0032] As can be seen from the above operating procedures, traditional installation methods are time-consuming and labor-intensive. Furthermore, each installation and disassembly carries the risk of assembly errors and loss due to improper storage. Additionally, the press machine is idle during state switching, increasing the equipment's ineffective working time. This is especially true for larger molds, which require heavy-duty overhead cranes for lifting and a spacious operating area. To address these shortcomings, this mechanism can quickly switch the punch position to achieve the purpose of partially perforated or non-perforated stamped parts without removing the stamping die from the press machine, opening the upper and lower dies, or disassembling the punch and related components.

[0033] The mold structure described in this embodiment includes an upper press table 1, a lower press table 5, an upper mold base 2, and a lower mold base 4. The upper and lower mold bases are respectively installed on the upper and lower press tables, and the upper and lower mold closing action is achieved by the press cylinder (not shown).

[0034] Punch assembly structure:

[0035] The punch pad 63 is fixed in the reserved slot of the upper die holder 2 and connected to the bottom plate of the upper die holder by four M12 bolts;

[0036] The punch clamp 62 is installed on the front end face of the punch pad 63 and is fixed by M10 bolts; the punch clamp 62 has a guide hole in the center that matches the shape of the punch.

[0037] The punch 61 is installed in the guide hole of the punch clamp 62, and the lower end cutting edge cooperates with the die cavity of the lower die holder 4.

[0038] Wedge structure and positioning mechanism:

[0039] The guide rod 68 is located at the tail of the punch pad 63, passes through the pad, and is connected to the guide sleeve 69 through the threaded end;

[0040] The guide sleeve 69 is sleeved on the guide post pull rod 68, and the two can slide along the stamping direction (Z axis);

[0041] The wedge block 66 is inserted between the punch pad 63 and the pull rod guide sleeve 69, and its inclined angle is 5°.

[0042] The quick-change mechanism is installed as follows: Figure 4 ,5 As shown in Figure 6, the working principle and operation procedure are detailed below:

[0043] ① Production of stamped parts without holes: To produce stamped parts without holes without removing the die from the press, simply pull the wedge block 66 outwards to the floating positioning pin 65 into the outer positioning groove. The punch 61, punch clamp 62, and punch pad 63 will move along the guide rod 68 towards the corresponding plane of the die base 2 under the action of the pull rod spring 610. This leaves sufficient space to ensure that the punch does not contact the stamped part when the press is working, achieving the goal of not punching corresponding holes without affecting other functions of the die.

[0044] ② Production of perforated stamped parts: To produce perforated stamped parts without removing the mold from the machine tool, simply push the wedge block 66 inwards towards the floating locating pin 65 to the inner locating groove. The punch 61, punch clamp 62, and punch pad 63 will move in the opposite direction to the upper die holder 2 along the guide rod 68 under the action of the pull rod spring 610. At this time, the projection direction of the punch downwards is entirely on the parallel plane of the wedge block, ensuring that the punching force on the punch can be transmitted to the stamping machine tool when it is working.

[0045] like Figure 8 As shown:

[0046] Punch 61: Removes excess material from the stamped part to obtain the required hole. Material: CR12MOV, hardness after heat treatment: HRC58-62.

[0047] Punch clamp 62: Fixes the punch 61 rigidly to counteract lateral forces that may be generated around it during operation. Material 45#, no heat treatment required.

[0048] Punch pad 63: Directly contacts the punch 61, transmitting the reverse force of the punching pressure generated by the punch during operation to the upper die holder, and then to the upper machine tool table (the upper machine tool table is the source of the punching pressure during the punching process). Material: CR12, hardness after heat treatment: HRC48-52.

[0049] Screws and pins 64: Pins are used to ensure the relative positional relationship of the punch, punch clamp, punch pad, etc., while screws are used to fix all related components.

[0050] Floating fixing pin assembly 65: When switching between producing stamped parts with and without holes, it is necessary to move the wedge block 66 to move the distance between the punch and the stamped part. The floating fixing pin assembly can ensure the accuracy and reliability of the movement position of the wedge block 66.

[0051] Wedge 66: The insertion and removal of the wedge block can realize the up and down movement of the punch. When inserted, because there is a wedge block under the punch pad, the punch moves towards the stamping part and can punch out a hole during stamping. After the wedge block is removed, because there is no wedge block under the punch pad, the punch moves away from the stamping part and will not punch out a hole during stamping.

[0052] Wedge block fixing block 67: Installed on the upper mold base, it slides with the wedge block 66 and plays a guiding role during the insertion and removal of the wedge block 66, ensuring that the wedge block moves in a straight line.

[0053] Guide rod 68: It serves a guiding function, ensuring that the punch, punch clamp, and punch pad move in the vertical punching direction when they move as a whole.

[0054] Tie rod guide sleeve 69: Installed on the upper die base, it slides in cooperation with the guide rod to ensure the relative position of the guide rod and the die base, and to ensure that the movement direction is along the vertical stamping direction.

[0055] Pull rod spring 610: After the wedge block is pulled out, it pulls the guide rod to move, so that the punch, punch clamp, and punch pad move as a whole away from the stamping part.

[0056] Pull rod washer 611: Its outer diameter is slightly larger than that of the pull rod spring, and it is in direct contact with the spring. Its main function is to transfer the spring force to the guide rod 69 after the wedge block is pulled out.

[0057] Pull rod nut 612: Adjusting the number of turns can adjust the position of the pull rod washer 611, so that the preload of all springs is basically the same. The double nut design can achieve the purpose of nut position self-locking.

[0058] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0059] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mold structure for rapidly switching the state of the die punch station, comprising a press upper table, an upper die holder, a lower die holder, and a lower die base, wherein the upper and lower die holders are respectively mounted on the press upper and lower tables, and the upper and lower die holders are controlled by a drive structure to press the blank into shape, characterized in that: A stamping assembly is provided on the upper die base. The stamping assembly includes a punch, a punch clamp, and a punch pad. The punch clamp is fixed on the punch pad by bolts, and the punch is provided on the punch clamp. The stamping assembly is also equipped with an adjustment structure to control the movement of the punch along the stamping direction.

2. The mold structure according to claim 1, characterized in that, The adjustment structure is used to adjust the working position of the punch in the working direction.

3. The mold structure according to claim 2, characterized in that, The adjustment structure includes a wedge block, a wedge block fixing block, a guide rod, and a pull rod spring; a guide rod is provided at the tail of the punch pad, and a pull rod guide sleeve is sleeved on the guide rod, which moves along the pull rod guide sleeve; an insertable wedge block is provided between the punch pad and the pull rod guide sleeve, and a wedge block fixing block is used to limit the wedge block, which moves along the plane of the wedge block fixing block.

4. The mold structure according to claim 3, characterized in that, A pull rod spring is also sleeved between the guide rod and the pull rod sleeve, which is used to reset the guide rod and thus push the punch to move along the direction of the guide rod.

5. The mold structure according to claim 4, characterized in that, The tail of the pull rod guide sleeve is provided with a pull rod washer and a pull rod bolt.

Images