Simple lifting type side pin locking plate mechanism and using method

Abstract

The invention discloses a simple lifting type side pin locking plate mechanism and a using method, and relates to the technical field of mold manufacturing. Comprising a base connected to the side face of a die holder, a lock plate connected to the base and a lifting mechanism used for lifting the lock plate. A clamping groove for placing the lock plate is formed in the base; the lock plate is in an inverted L shape, the shoulder portion of the lock plate is located in the clamping groove and locked by the lower edge of the clamping groove, the lower end of the lock plate is an arc-shaped end face, and the arc-shaped end face is matched with the end face of the locking portion of the side pin clamping groove in an arc mode. The lifting mechanism comprises a compression spring and a lifting screw, the two ends of the compression spring are connected with the upper edge of the base and the shoulder portion of the lock plate respectively, the lifting screw penetrates into the clamping groove, the tail end of the lifting screw is connected with the shoulder portion of the lock plate, and the top end of the lifting screw is exposed out of the base. According to the invention, the die replacement operation can be simply and quickly carried out without dismounting the base and the lock plate of the lock plate mechanism, so that the time and labor are saved, the standby time is obviously shortened, the die maintenance working efficiency is improved, and the popularization value is extremely high.

Description

Technical Field

[0001] This invention relates to the field of mold manufacturing technology, and in particular to a simple pull-up type side pin locking plate mechanism and its usage method used in the design and manufacture of automotive stamping dies. Background Technology

[0002] The automotive industry has undergone more than a century of development, with its appearance, performance, and driving comfort undergoing tremendous changes. Automotive stamping dies, used in automobile body manufacturing, have played an indispensable role. Large and medium-sized dies, such as those for the "four doors and two hoods," are crucial process equipment in body manufacturing; ensuring safety and good ergonomics during stamping production, die debugging, and maintenance is paramount.

[0003] like Figure 1 , Figure 3 As shown, the traditional side pin locking plate is secured to the mold base with only one screw, locking it in the side pin slot. During mold assembly, adjustment, and maintenance, the screw must be removed to extract the side pin, thus enabling these operations. The disassembly and assembly of over a dozen side pins per mold set severely impacts operational efficiency. An improved torsion spring locking plate mechanism, such as... Figure 4 As shown, while it achieves rapid mold changing, it sacrifices the strength of the locking plate due to the small contact area at the side pin slot end. Figure 5 As indicated by the black shadow, this poses a potential safety hazard to mold manufacturing and body stamping. Summary of the Invention

[0004] The purpose of this invention is to address the ergonomic problems of traditional side pin locking plate installation and disassembly, as well as the insufficient strength and safety hazards of torsion spring locking plate mechanisms. It provides a simple, pull-type side pin locking plate mechanism and its usage method. Firstly, the base is installed to the side of the mold base in one go, eliminating the need for further disassembly. By pulling and releasing the equal-height screws or the lifting screw, the locking plate moves up and down at the side pin slot end, locking and unlocking the side pin, thus enabling rapid mold changes. Secondly, the locking plate and the side pin slot perfectly match in arc shape, overcoming the small contact area at the side pin slot end of the torsion spring locking plate mechanism, ensuring maximum contact area between the locking plate and the slot side, thereby improving the strength of the locking plate and ensuring safe production.

[0005] The technical solution adopted by the present invention to achieve the above-mentioned objective is: a simple lifting-type side pin locking plate mechanism, characterized in that: it includes a base connected to the side of the mold base, a locking plate connected to the base, and a lifting mechanism for lifting the locking plate; the base has a slot for placing the locking plate; the locking plate is inverted L-shaped, the shoulder of the locking plate is located in the slot and locked by the lower edge of the slot, the lower end of the locking plate is an arc-shaped end face, the arc-shaped end face matches the arc-shaped end face of the side pin slot locking part, and the radius of the arc-shaped end face is the same as the radius of the side pin slot locking part; the lifting mechanism includes a compression spring and a lifting screw, the two ends of the compression spring are respectively connected to the upper edge of the base and the shoulder of the locking plate, the lifting screw passes into the slot, its end is connected to the shoulder of the locking plate, and its top end protrudes outside the base.

[0006] The lifting screw is an upper lifting screw, which is inserted sequentially into the screw hole opened in the top plate of the base and the compression spring, and the end is connected to the shoulder of the locking plate. MMSB6-18 screws are selected, and the sliding clearance between the screw and the top plate of the base is 0.05~0.1mm.

[0007] The lifting screw is a side lifting screw, which passes through an elongated hole opened in the side plate of the base and is connected at the end to the shoulder side of the lock plate. The length of the elongated hole is at least 6mm, and the gap between the hole and the side lifting screw is 0.1mm, so that the 3-5mm locking height groove can be smoothly disengaged from the lock plate.

[0008] The compression spring is connected at both ends to a 0.5mm deep groove on the upper edge of the base and the shoulder of the locking plate, respectively. A rectangular helical spring SSWR10.5-15 is selected, with an elastic coefficient k=10.46N / mm, a pre-compression of 1.0mm, and a maximum compression of 9.0mm.

[0009] The base is made of one of Q235B, 45# steel, 35CrMo, 40Cr, or 42CrMo; the locking plate is made of one of quenched and tempered 45# steel, quenched and tempered 35CrMo, or quenched and tempered 42CrMo. A gap of 0.05~0.1mm is reserved between the locking plate and the base and the mold base.

[0010] The slot depth is 24mm. When the locking plate stops at the lower edge of the slot, the distance between the shoulder of the locking plate and the upper end of the slot is 13mm.

[0011] The dimensions of the locking plate mechanism are: length × width × thickness 55 × 30 × 20mm, locking plate compression stroke 6.0mm, compression amount 7.0mm, and lifting force F≤73.22N.

[0012] A simple lifting-type side pin locking plate mechanism is characterized by the following steps: After determining the positions of the base and the side pin holes, the group of side pins is first inserted into the side pin holes of the mold base and the pressure core in sequence, and then the lifting-type side pin locking plate mechanism is installed. For the initial installation, the base is pre-installed on the mold base, the lifting screw is pulled up, the spring is compressed, the locking plate is lifted, the lower arc-shaped end face of the locking plate is aligned with the side pin slot, and then the locking plate is released. The arc-shaped end face is locked in the side pin slot. Then the fastening screw on the base is tightened, and the locking plate mechanism is installed on the side of the mold base. At this time, the locking cross-sectional area between the locking plate and the side pin is the largest, and the locking is safe and reliable. When it is necessary to remove the side pin, simply pull up the lifting screw to disengage the locking plate from the side pin slot, and the side pin can be pulled out and the pressure core can be removed.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention provides a simple lifting type side pin locking plate mechanism, which overcomes the disadvantage of traditional locking plates that require frequent disassembly and installation when handling mold assembly, adjustment and maintenance operations. It achieves the ultimate effect of one-time installation and lifelong use, greatly reduces standby time, significantly improves work efficiency, and has significant economic benefits.

[0014] (2) The present invention provides a simple lifting type side pin locking plate mechanism, which overcomes the shortcomings of insufficient locking plate strength, insufficient life and safety hazards of torsion spring locking type locking plate mechanism, and realizes a safe and efficient win-win situation for mold production and stamping production.

[0015] (3) The present invention provides a simple lifting type side pin locking plate mechanism, in which the thickness of the locking plate is increased from 5mm in the traditional type to 5.5mm, the width of the side pin slot is 6mm, the locking effect is still maintained, and the strength of the locking plate is improved.

[0016] (4) The present invention provides a simple lifting type side pin locking plate mechanism with a lifting stroke of 4~6mm and a pulling force of only 52.3~73.22N, which can be easily operated by an adult with one hand.

[0017] (5) The present invention provides a simple lifting type side pin locking plate mechanism in which the fastening screws and equal height screws of the base and the lifting screw are all fixed with thread glue or with disc washers, which has a significant anti-loosening effect.

[0018] (6) The present invention provides a simple lifting type side pin locking plate mechanism, which is very small in size, with a length × width × thickness of only 55 × 30 × 20 mm. It is installed on the side of the mold base and is not limited by space constraints. Attached Figure Description

[0019] Figure 1 This is an isometric drawing of a traditional locking plate mechanism.

[0020] Figure 2 This is a side pin shaft measurement diagram.

[0021] Figure 3 This is a schematic diagram of a traditional side pin locking plate structure.

[0022] Figure 4 This is an exploded schematic diagram of a torsion spring locking mechanism.

[0023] Figure 5 This is a schematic diagram of the locking section of a torsion spring locking type side pin lock plate.

[0024] Figure 6 This is an exploded view of a simple lifting-type side pin locking plate mechanism with an upper lifting position, as described in Embodiment 1.

[0025] Figure 7 This is an exploded view of a simplified pull-type side pin locking plate mechanism for side-position lifting, as described in Embodiment 2.

[0026] Figure 8 This is a schematic diagram of the locking section of the side pin locking plate of the present invention.

[0027] Figure 9 This is a diagram showing the installation effect of the side pin locking plate mechanism of the present invention on the mold.

[0028] In the figure: 1. Upper lifting screw, 2. Base one, 3. Compression spring, 4. Locking plate one, 5. Fastening screw, 6. Base two, 7. Locking plate two, 8. Side lifting screw, 9. Torsion shaft, 10. Torsion spring, 11. Base three, 12. Locking plate three, 13. Handle, 14. Side pin, 15. Locking plate of this invention, 16. Mold base, 17. Pressing core, 18. Wear-resistant plate, 19. Compression spring two, 20. Unloading screw. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments, but the present invention is not limited to the specific embodiments.

[0030] Example 1

[0031] like Figure 6The illustrated simple lifting-type side pin locking plate mechanism, in this embodiment being an upward lifting type, includes a base 2 connected to the side of the mold base 16, a locking plate 4 connected to the base 2, and a lifting mechanism for lifting the locking plate 4; the base 2 has a slot for placing the locking plate 4; the locking plate 4 is inverted L-shaped, with its shoulder located in the slot and locked by the lower edge of the slot, and the lower end of the locking plate 4 is an arc-shaped end face, which matches the arc-shaped end face of the side pin slot locking part, and the radius of the arc-shaped end face is the same as the radius of the side pin slot locking part; the lifting mechanism includes a compression spring 3 and an upper lifting screw 1, the two ends of the compression spring 3 are respectively connected to the upper edge of the base 2 and the shoulder of the locking plate 4, and the upper lifting screw 1 is sequentially inserted into the screw hole opened in the top plate of the base 2 and the compression spring 3, with its end connected to the shoulder of the locking plate 4 and its top exposed outside the base.

[0032] The upper lifting screw 1 is an MMSB6-18 screw, and its sliding clearance with the top plate of base 2 is 0.05~0.1mm. Base 2 is made of Q235B or 45# steel; locking plate 4 is 5.5mm thick and made of quenched and tempered 45# steel. A clearance of 0.05~0.1mm is reserved between locking plate 4 and base 2 and mold base 16.

[0033] The compression spring 3 is connected at both ends to the upper edge of the base 2 and the shoulder of the locking plate 4, respectively, in a 0.5mm deep groove. A rectangular helical spring SSWR10.5-15 is selected, with an elastic coefficient k=10.46N / mm, a pre-compression of 1.0mm, and a maximum compression of 9.0mm.

[0034] A simple lifting-type side pin locking plate mechanism is used as follows: After determining the position of the base 2 and the side pin hole, the group of side pins 14 are first inserted into the side pin holes of the mold base 16 and the pressure core 17 in sequence, and then the lifting-type side pin locking plate mechanism is installed. For the first installation, the base 2 is pre-installed on the mold base 16, the lifting screw 1 is pulled up, the compression spring 3 is compressed, the locking plate 4 is lifted, the lower arc-shaped end face of the locking plate 4 is aligned with the slot of the side pin 14, and the locking plate 4 is released. The arc-shaped end face is locked in the slot of the side pin 14. Then the fastening screw 5 on the base 2 is tightened, and the locking plate mechanism is installed on the side of the mold base 16. At this time, the locking cross-sectional area of ​​the locking plate 4 and the side pin 14 is the largest, and the locking is safe and reliable. When it is necessary to remove the side pin 14, simply pull up the lifting screw 1 to make the locking plate 4 disengage from the slot of the side pin 14, and the side pin 14 can be pulled out and the pressure core 17 can be removed.

[0035] Example 2

[0036] In this embodiment, the structure and connection relationship of each part of the simple lifting type side pin locking plate mechanism are the same as those in embodiment 1. The difference is that the base 2 is made of one of 35CrMo, 40Cr, and 42CrMo; and the locking plate 4 is made of one of quenched and tempered 35CrMo and quenched and tempered 42CrMo.

[0037] Example 3

[0038] like Figure 7 The illustrated simple lifting-type side pin locking plate mechanism, in this embodiment being a side lifting type, includes a base 2 6 connected to the side of the mold base 16, a locking plate 2 7 connected to the base 2 6, and a lifting mechanism for lifting the locking plate 2 7; the base 2 6 has a slot for placing the locking plate 2 7; the locking plate 2 7 is inverted L-shaped, the shoulder of the locking plate 2 7 is located in the slot and locked by the lower edge of the slot, the lower end of the locking plate 2 7 is an arc-shaped end face, the arc-shaped end face matches the arc-shaped end face of the side pin slot locking part, the arc... The radius of the shaped end face is the same as the radius of the side pin slot locking part; the lifting mechanism includes a compression spring 3 and a side lifting screw 8. The two ends of the compression spring 3 are respectively connected to the upper edge of the base 2 6 and the shoulder of the locking plate 2 7. The side lifting screw 8 passes through the elongated hole opened in the side plate of the base 2 6, and the end is connected to the side of the shoulder of the locking plate 2 7. The top end is exposed outside the base. The length of the elongated hole is at least 6mm, and the gap with the side lifting screw is 0.1mm, so that the slot with a locking height of 3~5mm can be smoothly disengaged from the locking plate.

[0039] The side lifting screw 8 is an MMSB6-18 screw, and its sliding clearance with the side plate of base 2 6 is 0.05~0.1mm. Base 2 6 is made of Q235B or 45# steel; locking plate 2 7 is 5.5mm thick and made of quenched and tempered 45# steel. A clearance of 0.05~0.1mm is reserved between locking plate 2 7 and base 2 6 and mold base 16.

[0040] The compression spring 3 is connected at both ends to the upper edge of the base 2 6 and the shoulder of the locking plate 2 7 in a 0.5mm deep groove. A rectangular helical spring SSWR10.5-15 is selected, with an elastic coefficient k=10.46N / mm, a pre-compression of 1.0mm, and a maximum compression of 9.0mm.

[0041] A simple lifting-type side pin locking plate mechanism is used as follows: After determining the position of the base 2 6 and the side pin hole, the group of side pins 14 are first inserted into the side pin holes of the mold base 16 and the pressure core 17 in sequence, and then the lifting-type side pin locking plate mechanism is installed. For the first installation, the base 2 6 is pre-installed on the mold base 16. The side lifting screw 8 is pulled up, the compression spring 3 is compressed, the locking plate 2 7 is lifted, the lower arc-shaped end face of the locking plate 2 7 is aligned with the slot of the side pin 14, and then the arc-shaped end face of the locking plate 2 7 is released and locked in the slot of the side pin 14. Then the fastening screw 5 on the base 2 6 is tightened, and the locking plate mechanism is installed on the side of the mold base 16. At this time, the locking cross-sectional area of ​​the locking plate 2 7 and the side pin 14 is the largest, and the locking is safe and reliable. When it is necessary to remove the side pin 14, it is only necessary to pull up the side lifting screw 8 to make the locking plate 2 7 disengage from the slot of the side pin 14, and then the side pin 14 can be pulled out and the pressure core 17 can be removed.

[0042] Example 4

[0043] The structure and connection relationship of each part of the simple lifting type side pin locking plate mechanism described in this embodiment are the same as those in embodiment 3. The difference is that the base 6 is made of one of 35CrMo, 40Cr, and 42CrMo; the locking plate 7 is made of one of quenched and tempered 35CrMo and quenched and tempered 42CrMo.

[0044] This invention and such Figure 1 , Figure 3 The traditional locking mechanism shown, such as Figure 4 , Figure 5 Compared to the torsion spring locking type locking plate mechanism shown, several key structural features or characteristics are as follows: (1) The present invention provides a simple lifting type side pin locking plate mechanism, which changes the traditional locking plate mechanism that requires repeated disassembly of the locking plate during initial installation and subsequent mold maintenance operations to complete the extraction and insertion of the side pin into the mold base. It realizes a simple and quick mold change operation that can be used for life after one installation, saving time and effort. It is suitable for automotive molds, especially for drawing processes.

[0045] (2) The present invention provides a simple lifting type side pin locking plate mechanism, which changes the disadvantage of the small side pin locking cross section of the torsion spring locking plate mechanism. The locking plate and the side pin slot are arc-shaped to achieve the maximum locking cross section, which significantly improves the resistance to lateral impact and ensures safe and reliable operation of the mold.

[0046] (3) The present invention provides a simple lifting type side pin locking plate mechanism. With the locking section of the locking plate unchanged, the thickness is increased to 5.5mm, the strength is improved, the ability to resist impact loads is enhanced, and the die stamping operation is more reliable.

[0047] (4) The present invention provides a simple lifting type side pin locking plate mechanism with a lifting force F≤73.22N, which can be operated by adults and is beneficial to the maintenance of the mold and mechanism itself, with excellent ergonomics.

[0048] (4) The present invention provides a simple lifting type side pin locking plate mechanism, which improves the material heat treatment of the traditional locking plate mechanism. The locking plate is subjected to heat treatment, and its toughness and strength are significantly improved, making the mold safety more reliable.

[0049] (5) The present invention provides a simple lifting type side pin locking plate mechanism. After unifying the size and type of the lifting screw, it can achieve two functions in one machine. That is, one set of mechanisms can lift from the top or from the side, which can meet the needs of limited mold space or different operator habits, and make human-machine engineering more user-friendly.

[0050] The above description, in conjunction with preferred technical solutions, provides a further detailed explanation of the present invention and should not be construed as limiting the specific implementation of the invention to these descriptions. For those skilled in the art, simple deductions and substitutions can be made without departing from the concept of the present invention, and all such deductions and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A simple pull-up type side pin locking plate mechanism, characterized in that: It includes a base connected to the side of the mold base, a locking plate connected to the base and a lifting mechanism for lifting the locking plate; a slot for placing the locking plate is provided on the base; the locking plate is an inverted L-shape, the shoulder of the locking plate is located in the slot and is locked by the lower edge of the slot, the lower end of the locking plate is an arc-shaped end face, the arc-shaped end face is arc-matched with the end face of the locking part of the side pin slot, and the radius of the arc-shaped end face is the same as the radius of the locking part of the side pin slot; the lifting mechanism includes a compression spring and a lifting screw, the two ends of the compression spring are respectively connected to the upper edge of the base and the shoulder of the locking plate, the lifting screw penetrates into the slot, the end of which is connected to the shoulder of the locking plate, and the top end is exposed outside the base.

2. A simple pull-up type side pin locking plate mechanism according to claim 1, characterized in that: The lifting screw is an upper lifting screw, which is inserted into the screw hole and the compression spring opened on the top plate of the base in sequence, and the end is connected to the shoulder of the locking plate. The MMSB6-18 screw is selected, and the sliding clearance between it and the top plate of the base is 0.05~0.1mm.

3. A simple pull-up type side pin locking plate mechanism according to claim 1, characterized in that: The lifting screw is a side lifting screw, which passes through the long hole opened on the side plate of the base, and the end is connected to the shoulder side of the locking plate. MMSB6-18 screws are selected. The length of the long hole is at least 6mm, and the gap with the side lifting screw is 0.1mm, so that the card slot with a locking height of 3~5mm and the locking plate can be smoothly disengaged.

4. A simple pull-up type side pin locking plate mechanism according to claim 1, characterized in that: The two ends of the compression spring are respectively connected to the upper edge of the base and the shoulder of the lock plate in a seat groove with a depth of 0.5mm. A rectangular coil spring SSWR10.5-15 is selected, with an elastic coefficient k=10.46N / mm, a pre-compression amount of 1.0mm, and a maximum compression amount of 9.0mm.

5. The simple pull-up type side pin locking plate mechanism according to claim 1, characterized in that: The base is made of one of Q235B, 45# steel, 35CrMo, 40Cr, and 42CrMo; the lock plate is made of one of quenched and tempered 45# steel, quenched and tempered 35CrMo, and quenched and tempered 42CrMo. A gap of 0.05-0.1mm is reserved between the lock plate and the base and the mold base.

6. The simple pull-up type side pin locking plate mechanism according to claim 1, characterized in that: The depth of the slot is 24 mm. When the locking plate stops at the lower edge of the slot, the distance between the shoulder of the locking plate and the upper end of the slot is 13 mm.

7. A simple pull-up type side pin locking plate mechanism according to any one of claims 1 to 6, characterized in that: Said The dimensions of the locking plate mechanism are: length × width × thickness: 55 × 30 × 20 mm, the locking plate compression stroke is 6.0 mm, the compression amount is 7.0 mm, and the pulling force F ≤ 73.22 N.

8. The method for using the simple lifting type side pin locking plate mechanism according to claim 1, characterized in that: After the base and the side pin holes are positioned, first insert the grouped side pins into the side pin holes of the die base and the pressing core in turn, and then install the lifting-type side pin locking plate mechanism; as the first installation, pre-install the base on the die base, lift the lifting screw, compress the compression spring, lift the locking plate, align the arc-shaped end surface of the lower end of the locking plate with the side pin slot and then release the locking plate, place the arc-shaped end surface in the side pin slot and lock it, then tighten the fastening screws on the base, and install the locking plate mechanism on the side of the die base. At this time, the locking cross-sectional area of ​​the locking plate and the side pin is the largest, and the locking is safe and reliable; when the side pin needs to be removed, only the lifting screw needs to be lifted to disengage the locking plate from the side pin slot, and then the side pin can be pulled out and the pressing core can be removed.

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