Improved core rod mechanism capable of improving structural strength of lower punch seat

Abstract

The utility model discloses an improved core rod mechanism capable of improving the structural strength of a lower punch seat, which comprises a core rod, a core rod locking block, a core rod mounting seat, a locking screw, a lower punch fixing seat and a core rod lifting driving device, one side of the upper portion of the core rod mounting seat is in a semi-circular column shape, the core rod locking block and the upper portion of the core rod mounting seat are complementary to form a containing hole, the middle of the containing hole is coaxial with the through hole, a screw locking hole is horizontally formed in the core rod locking block, and a threaded hole is correspondingly formed in the upper portion of the core rod mounting seat. The lower portion of the core rod is inserted into the containing hole and penetrates through the screw locking hole through a locking screw to be in threaded connection with the threaded hole. The outer side wall of the lower punch fixing base is provided with a mounting hole which is communicated with the hole channel and right faces the core rod locking block. According to the utility model, the mandrel can be quickly clamped and mounted by adopting a screwdriver, and the size of the opening of the lower punch fixing seat is reduced and the structural strength of the lower punch fixing seat is enhanced by improving the mounting mode of the mandrel.

Description

Technical Field

[0001] This utility model relates to the field of powder forming press technology, and more specifically, to an improved mandrel mechanism that can improve the structural strength of the lower punch. Background Technology

[0002] A powder forming press is a device that presses metal or ceramic powder into a fixed shape (such as a block). However, current powder forming presses on the market have the following shortcomings: To create holes in the product, a mandrel is typically used. This mandrel usually requires manual installation; the operator needs to insert a wrench into the opening of the lower punch holder and turn the nut on the mandrel left and right to lock it in place. This method results in a relatively large opening in the lower punch holder, requiring sufficient lateral space for the wrench to rotate. However, this increased opening reduces the structural strength of the lower punch holder, affecting equipment accuracy and forming quality. Furthermore, this installation method is inconvenient to operate, inefficient, and increases the difficulty of subsequent maintenance. To improve these issues, it is necessary to provide an improved mandrel mechanism that enhances the structural strength of the lower punch holder. By improving the mandrel installation method, the size of the lower punch holder opening can be reduced, increasing the structural strength of the lower punch holder and improving pressing accuracy. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned defects in the prior art and provide an improved mandrel mechanism that can reduce the opening size of the mounting hole of the lower punch fixing seat, ensure the structural strength of the lower punch fixing seat, and increase the compressive strength of the lower punch fixing seat, thereby improving the structural strength of the lower punch fixing seat.

[0004] To achieve the above objectives, this utility model provides an improved mandrel mechanism that enhances the structural strength of the lower punch seat. The mechanism includes a mandrel, a mandrel locking block, a mandrel mounting base, a locking screw, a lower punch fixing base, and a mandrel lifting drive device. The lower punch fixing base has a through-hole connecting its upper and lower openings. The bottom of the mandrel mounting base is connected to the output portion of the mandrel lifting drive device and movably passes through the through-hole. The mandrel mounting base has a through-hole for inserting the mandrel. One side of the upper part of the mandrel mounting base has a semi-circular annular columnar structure. The mandrel locking block also has a semi-circular annular columnar structure. The mandrel is configured to complement the upper part of the mandrel mounting base, forming a central receiving hole through which the mandrel passes and coaxially arranged with the through hole. Several screw holes are horizontally opened on both sides of the mandrel locking block. Threaded holes are opened on both sides of the upper part of the mandrel mounting base corresponding to each screw hole. The lower part of the mandrel is inserted into the receiving hole and connected to the threaded hole of the mandrel mounting base by a locking screw passing through each screw hole of the mandrel locking block, thereby achieving a fixed connection between the mandrel and the mandrel mounting base. A connecting channel is opened on the outer wall of the lower punch fixing base, which is directly opposite the mounting hole of the mandrel locking block.

[0005] Preferably, the mandrel lifting drive device includes a mandrel lifting drive motor, a mandrel fixing plate, a mandrel lead screw, a lead screw bearing seat, a drive wheel, a driven wheel, a synchronous belt, a mandrel floating plate, a mandrel guide rod, a mandrel nut guide sleeve, a mandrel piston, and a mandrel piston cover. The mandrel lifting drive motor passes downward through one side of the mandrel fixing plate. The drive wheel is connected to the output shaft of the mandrel lifting drive motor. The end of the mandrel lead screw is rotatably mounted on the other side of the mandrel fixing plate via the lead screw bearing seat. The driven wheel is fixedly sleeved on the end of the mandrel lead screw and connected to the drive wheel. The driving pulleys are flush with each other. The synchronous belt is sleeved on the driving pulley and the driven pulley. There are four mandrel guide rods, which are fixedly inserted into the mandrel fixing plate and located around the lead screw bearing seat. The mandrel floating plate is slidably connected to the mandrel guide rod. The other end of the mandrel lead screw is threadedly connected to the mandrel nut guide sleeve and passes through the mandrel floating plate. The end of the mandrel nut guide sleeve is fixedly connected to the mandrel floating plate. The bottom of the mandrel piston is fixedly connected to the top of the mandrel nut guide sleeve through the mandrel piston pressure cap. The bottom of the mandrel mounting seat is fixedly connected to the top of the mandrel piston.

[0006] Preferably, the device also includes a lower punch base and a 3R clamp. The lower punch base is sleeved on the outside of the mandrel piston and fixedly connected to the bottom surface of the lower punch fixing seat. The 3R clamp is fixedly installed facing upward on the top surface of the lower punch fixing seat, and the upper part of the mandrel is movably inserted through the 3R clamp.

[0007] Preferably, the mounting hole has a rectangular opening shape and is horizontally positioned to penetrate the front and back of the punch mounting base.

[0008] Preferably, a dust cover is also included, which is fitted onto the mandrel screw and located between the screw bearing seat and the mandrel floating plate.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] This utility model features a novel structure and reasonable design. By having an operator insert a screwdriver into the mounting hole of the lower punch fixing seat and then thread a locking screw through the mandrel locking block to connect with the mandrel mounting seat, the mandrel inserted into the mandrel mounting seat can be quickly clamped and installed, improving the efficiency of mandrel assembly and disassembly. Compared with the traditional installation method of using a wrench to turn left and right, this utility model can reduce the opening size of the mounting hole of the lower punch fixing seat, ensuring the structural strength of the lower punch fixing seat, thereby increasing the compressive strength of the lower punch fixing seat and improving stability and pressing accuracy. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of a modified mandrel mechanism that can improve the structural strength of the lower punch according to an embodiment of the present invention;

[0013] Figure 2 This is an exploded view of the mandrel, mandrel locking block and mandrel mounting base of an improved mandrel mechanism that can improve the structural strength of the lower punch seat, according to an embodiment of the present utility model.

[0014] Figure 3 This is a partially exploded schematic diagram of an improved mandrel mechanism that can improve the structural strength of the lower punch according to an embodiment of the present invention.

[0015] Figure 4 This is a schematic diagram of the mandrel lifting drive device of an improved mandrel mechanism that can improve the structural strength of the lower punch seat, according to an embodiment of this utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments 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, 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 protection scope of this utility model.

[0017] Please refer to Figure 1 The present invention provides an improved mandrel mechanism that can improve the structural strength of the lower punch seat, including a mandrel 1, a mandrel locking block 2, a mandrel mounting seat 3, a locking screw 4, a lower punch fixing seat 5, and a mandrel lifting drive device 6, etc. The components of this embodiment will be described in detail below with reference to the accompanying drawings.

[0018] like Figure 1 and Figure 2 As shown, the lower punch fixing seat 5 has a through hole 51 that connects its upper and lower opening ends. The bottom of the mandrel mounting seat 3 is connected to the output part of the mandrel lifting drive device 6 and is movably inserted in the through hole 51.

[0019] Specifically, the mandrel mounting base 3 has a through hole 31 for inserting the mandrel 1. The upper part of the mandrel mounting base 3 is set in a semi-circular annular columnar structure. The mandrel locking block 2 is set in a semi-circular annular columnar structure and complements the upper part of the mandrel mounting base 3 to form a receiving hole 32 in the middle for the mandrel 1 to pass through and is coaxial with the through hole 31. Several screw holes 21 are horizontally opened on both sides of the mandrel locking block 2. Threaded holes 33 are opened on both sides of the upper part of the mandrel mounting base 3 corresponding to each screw hole 21. The lower part of the mandrel 1 is inserted into the receiving hole 32 and is threaded to the threaded hole 33 of the mandrel mounting base 3 after passing through each screw hole 21 of the mandrel locking block 2 with a locking screw 4. This achieves a fixed connection between the mandrel 1 and the mandrel mounting base 3. A connecting channel 51 is opened on the outer wall of the lower punch fixing base 5 and is directly opposite the mounting hole 52 of the mandrel locking block 2.

[0020] Preferably, the mounting hole 52 can be rectangular in shape, and the mounting hole 52 is horizontally arranged through the front and back of the lower punch holder 5. In particular, the rectangular hole has a stronger load-bearing capacity in a certain direction than the circular hole, which helps to improve the overall structural strength of the lower punch holder 5, thereby reducing the risk of deformation during the pressing process.

[0021] In practice, the operator inserts a screwdriver into the mounting hole 52 of the lower punch fixing seat 5, and uses a locking screw 4 to pass through the mandrel locking block 2 and connect with the mandrel mounting seat 3 by thread. This allows for quick clamping and installation of the mandrel 1 inserted into the through hole 31 of the mandrel mounting seat 3, preventing the mandrel 1 from loosening. This design reduces the opening size of the mounting hole 52 of the lower punch fixing seat 5, ensuring the structural strength of the lower punch fixing seat, thereby increasing the compressive strength of the lower punch fixing seat and improving the efficiency of mandrel assembly and disassembly.

[0022] like Figure 3 As shown, it also includes a lower punch base 7 and a 3R clamp 8. The lower punch base 7 is sleeved on the outside of the mandrel piston 69 and fixedly connected to the bottom surface of the lower punch fixing seat 5. The 3R clamp 8 is fixedly installed facing upwards on the top surface of the lower punch fixing seat 5, and the upper part of the mandrel 1 is movably inserted through the 3R clamp 8. The 3R clamp 8 is used to facilitate the quick installation and removal of the lower punch at its top.

[0023] In practice, the mandrel 6 can pass upward through the channel 51 of the lower punch fixing seat 5 and the center hole of the 3R clamp 8 and then be inserted into the mandrel hole of the lower punch.

[0024] like Figure 4 As shown, the mandrel lifting drive device 6 may include a mandrel lifting drive motor 61, a mandrel fixing plate 62, a mandrel lead screw 63, a lead screw bearing seat 64, a drive wheel 651, a driven wheel 652, a synchronous belt 653, a mandrel floating plate 66, a mandrel guide rod 67, a mandrel nut guide sleeve 68, a mandrel piston 69, and a mandrel piston cover 691. The mandrel lifting drive motor 61 passes downward through one side of the mandrel fixing plate 62. The drive wheel 651 is connected to the output shaft of the mandrel lifting drive motor 61. The end of the mandrel lead screw 63 is rotatably mounted on the other side of the mandrel fixing plate 62 through the lead screw bearing seat 64. The driven wheel 652 is fixedly sleeved on the end of the mandrel lead screw 63. The end is flush with the drive wheel 651. The timing belt 653 is sleeved on the drive wheel 651 and the driven wheel 652. There are four mandrel guide rods 67, which are fixedly inserted into the mandrel fixing plate 62 and located around the lead screw bearing seat 64. The mandrel floating plate 66 is slidably connected to the mandrel guide rod 67. The other end of the mandrel lead screw 63 is threadedly connected to the mandrel nut guide sleeve 68 and passes through the mandrel floating plate 66. The end of the mandrel nut guide sleeve 68 is fixedly connected to the mandrel floating plate 66. The bottom of the mandrel piston 69 is fixedly connected to the top of the mandrel nut guide sleeve 68 through the mandrel piston pressure cover 691. The bottom of the mandrel mounting seat 3 is fixedly connected to the top of the mandrel piston 69.

[0025] The mandrel lifting drive motor 61 can be configured as a servo motor. The drive wheel 651, driven wheel 652 and synchronous belt 653 together form a transmission system, which converts the rotational motion of the mandrel lifting drive motor 61 into the linear motion of the mandrel screw 63. It has a high degree of automation and can accurately control the height of the mandrel 1.

[0026] Preferably, in order to prevent dust and debris from entering the mandrel screw 63 and causing wear, a dust cover 9 may also be included. The dust cover 9 is fitted on the mandrel screw 63 and located between the screw bearing seat 64 and the mandrel floating plate 66.

[0027] In practice, the mandrel 1 can be raised or lowered by the mandrel lifting drive motor 61 through the aforementioned mandrel lifting drive device 6, thereby adjusting its position (i.e., adjusting its height position, such as the height of the top of the downward punch), without the need for manual operation, thus improving efficiency and accuracy.

[0028] In summary, by having the operator insert a screwdriver into the mounting hole of the lower punch holder and then use a locking screw to pass through the mandrel locking block and connect it to the mandrel mounting seat, the mandrel inserted into the mandrel mounting seat can be quickly clamped and installed. This improves the efficiency of mandrel assembly and disassembly, and also reduces the opening size of the mounting hole of the lower punch holder, ensuring the structural strength of the lower punch holder, thereby increasing its compressive strength, stability, and pressing accuracy.

[0029] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. An improved mandrel mechanism that can enhance the structural strength of the lower punch, characterized in that: The device includes a mandrel (1), a mandrel locking block (2), a mandrel mounting base (3), a locking screw (4), a lower punch fixing base (5), and a mandrel lifting drive device (6). The lower punch fixing base (5) has a through hole (51) connecting its upper and lower opening ends. The bottom of the mandrel mounting base (3) is connected to the output part of the mandrel lifting drive device (6) and is movably inserted in the through hole (51). The mandrel mounting base (3) has a through hole (31) for inserting the mandrel (1). The upper part of the mandrel mounting base (3) is set in a semi-circular annular columnar structure. The mandrel locking block (2) is set in a semi-circular annular columnar structure and complements the upper part of the mandrel mounting base (3) to form a middle part for the mandrel (1) to pass through. The receiving hole (32) is coaxially arranged with the through hole (31). Several screw holes (21) are horizontally opened on both sides of the core rod locking block (2). Threaded holes (33) are opened on both sides of the upper part of the core rod mounting base (3) corresponding to each screw hole (21). The lower part of the core rod (1) is inserted into the receiving hole (32) and is threaded to the threaded hole (33) of the core rod mounting base (3) after passing through each screw hole (21) of the core rod locking block (2) with a locking screw (4). This achieves a fixed connection between the core rod (1) and the core rod mounting base (3). A connecting channel (51) is opened on the outer wall of the lower punch fixing base (5) and is directly opposite the mounting hole (52) of the core rod locking block (2).

2. The improved mandrel mechanism according to claim 1, which can improve the structural strength of the lower punch, is characterized in that: The mandrel lifting drive device (6) includes a mandrel lifting drive motor (61), a mandrel fixing plate (62), a mandrel lead screw (63), a lead screw bearing seat (64), a drive wheel (651), a driven wheel (652), a synchronous belt (653), a mandrel floating plate (66), a mandrel guide rod (67), a mandrel nut guide sleeve (68), a mandrel piston (69), and a mandrel piston cap (691). The mandrel lifting drive motor (61) passes downward through one side of the mandrel fixing plate (62). The drive wheel (651) is connected to the output shaft of the mandrel lifting drive motor (61). The end of the mandrel lead screw (63) is rotatably mounted on the other side of the mandrel fixing plate (62) through the lead screw bearing seat (64). The driven wheel (652) is fixedly sleeved on the end of the mandrel lead screw (63). The synchronous belt (653) is sleeved on the driving wheel (651) and the driven wheel (652). The mandrel guide rod (67) is provided with four rods and is fixedly inserted on the mandrel fixing plate (62) and located around the screw bearing seat (64). The mandrel floating plate (66) is slidably connected to the mandrel guide rod (67). The other end of the mandrel screw (63) is threadedly connected to the mandrel nut guide sleeve (68) and passes through the mandrel floating plate (66). The end of the mandrel nut guide sleeve (68) is fixedly connected to the mandrel floating plate (66). The bottom of the mandrel piston (69) is fixedly connected to the top of the mandrel nut guide sleeve (68) through the mandrel piston pressure cover (691). The bottom of the mandrel mounting seat (3) is fixedly connected to the top of the mandrel piston (69).

3. The improved mandrel mechanism according to claim 1, which can improve the structural strength of the lower punch, is characterized in that: It also includes a lower punch base (7) and a 3R clamp (8). The lower punch base (7) is sleeved on the outside of the mandrel piston (69) and fixedly connected to the bottom surface of the lower punch fixing seat (5). The 3R clamp (8) is fixedly installed on the top surface of the lower punch fixing seat (5) facing upward. The upper part of the mandrel (1) is movably inserted into the 3R clamp (8).

4. The improved mandrel mechanism according to claim 1, which can improve the structural strength of the lower punch, is characterized in that: The mounting hole (52) is rectangular in shape and is horizontally disposed through the front and back of the punch fixing seat (5).

5. The improved mandrel mechanism according to claim 2, which can improve the structural strength of the lower punch, is characterized in that: It also includes a dust cover (9), which is fitted on the mandrel screw (63) and located between the screw bearing seat (64) and the mandrel floating plate (66).

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