Production device for lock catch type parts

Abstract

The utility model discloses a production device for lock catch type parts. The production device for the lock catch type parts comprises an ejection air cylinder, an upper pressing plate and a lower male die. An edge cutting knife block and a rotary CAM knife block are installed at the bottom of the upper material pressing plate, the rotary CAM knife block is rotationally connected to the upper material pressing plate, connecting columns are fixedly installed on the end face of the rotary CAM knife block and the side face of the upper material pressing plate, springs are connected to the two connecting columns, and the springs are obliquely arranged in a normal state. The bottom of the rotary CAM cutter block is provided with a material pressing face matched with the lower male die. According to the rotary forming CAM cutter block, an original forming cutter block is changed into the rotary forming CAM cutter block, materials can move according to an expected state through rotary forming and return of the spring, the problems that common forming equipment is prone to scratching plates and long in development period are solved, the die debugging time is shortened, and the die development period is shortened.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a production device for lock-type parts. Background Art

[0002] In the mold of small automotive parts, in order to ensure the accuracy and speed of the parts, it is required to accurately position the sheet in the mold and produce quickly and continuously. Therefore, it is usually set to direct forming in the mold. The sheet will have greater friction as it moves downward with the mold, especially high-strength plates, which have great forming force and affect the surface quality.

[0003] If a molding die is to achieve a conformity rate that meets the standard, the common method is to correct the springback and repeatedly process and adjust to get close to the data (see Figure 3 ); There are repeated repair welding, repeated machine operation, and repeated processing during the processing, and the processing datum cannot be completely consistent, which affects the accuracy of the parts; if there is a part with a very small forming angle, the springback amount available for rectification is too small to produce a qualified part; in addition, this method has a very long cycle and is inconvenient to use. Utility Model Content

[0004] The purpose of the utility model is to provide a production device for lock-type parts to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a production device for lock-type parts, including a push cylinder, an upper pressing plate and a lower punch;

[0006] A trimming knife block and a rotating CAM knife block are installed at the bottom of the upper pressing plate, wherein the rotating CAM knife block is rotatably connected to the upper pressing plate, and connecting columns are fixedly installed on the end face of the rotating CAM knife block and the side face of the upper pressing plate, and springs are connected to the two connecting columns, and the springs are inclined under normal conditions, and the bottom of the rotating CAM knife block has a pressing surface adapted to the lower punch.

[0007] Preferably, two rotating CAM tool blocks are arranged at intervals, corresponding to the positions on both sides of the protrusion of the lower punch respectively.

[0008] Preferably, a buffer polyurethane block is provided on the end face of the lower punch for buffering when in contact with the upper pressing plate.

[0009] Preferably, the output end of the ejection cylinder is connected to a feeding rack for feeding the sheet material onto the supporting rack.

[0010] Preferably, it also includes a material blocking rack and a material blocking plate, which are used to limit the position of the sheet material during feeding.

[0011] Preferably, the rotating CAM cutter block as a whole is a structure for cutting out a forming pressing surface on a circular structure.

[0012] Preferably, the lower punch is made of air-cooled steel or No. 45 steel.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model changes the original forming knife block into a rotary forming CAM knife block. Through rotary forming and using spring return, the material can move in the expected state, which solves the problem that ordinary forming equipment is easy to scratch the plate and has a long development cycle, reduces the mold debugging time, and shortens the mold development cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a top view of the utility model;

[0017] Figure 3 It is a schematic diagram of a forming knife block in the prior art. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] As shown in the figure, this embodiment provides a production device for lock-type parts. Figure 1 and Figure 2 As shown, it includes a ejection cylinder 1, an upper pressing plate 5 and a lower punch 8;

[0020] The bottom of the upper pressing plate 5 is equipped with a trimming knife block 4 and a rotating CAM knife block 7, wherein the rotating CAM knife block 7 is rotatably connected to the upper pressing plate 5, and the end surface of the rotating CAM knife block 7 and the side surface of the upper pressing plate 5 are fixedly installed with connecting columns, and springs are connected to the two connecting columns, and the springs are tilted in a normal state, and the bottom of the rotating CAM knife block 7 has a pressing surface adapted to the lower punch 8. Two rotating CAM knife blocks 7 are arranged at intervals, corresponding to the two sides of the protrusion of the lower punch 8 respectively.

[0021] During the production process, the feeder sends the sheet to the support rack, the stop rack limits the sheet, the upper mold moves downward, and after the upper pressure plate contacts the sheet, the trimming knife cuts the sheet. It also includes a stop rack 3 and a stop plate 6, which are used to limit the sheet during feeding. The ejector cylinder pushes out the sheet, and is limited by the limit rod hidden inside and the stop rack 3 on the outside. The mold moves downward, and the upper load-bearing pressure plate presses the cut sheet. The three force points are buffered by polyurethane and continue to move downward. The rotating CAM knife block rotates to the bottom, and the sheet is formed. The upper mold moves upward, and the upper load-bearing pressure plate separates from the lower mold. At this time, the automated cylinder and the feeder rack push the cut sheet to the forming area.

[0022] During the development process, the lower die is still made of air-cooled steel or 45 steel due to the forming strength requirements. No repair welding is required during the development process. It only needs to be processed inward during the debugging process. The rotating CAM does not need to be processed, and the forming angle can be adjusted (saving half the development time compared to the ordinary solution).

[0023] During this process, the sheet metal can move in the expected state, which solves the problem that ordinary molding equipment is easy to scratch the sheet metal and has a long development cycle, reduces the mold debugging time, and shortens the mold development cycle.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A production device for lock-type parts, characterized in that: It comprises a material ejecting cylinder (1), an upper material pressing plate (5) and a lower punch (8); A trimming knife block (4) and a rotating CAM knife block (7) are installed at the bottom of the upper pressing plate (5), wherein the rotating CAM knife block (7) is rotatably connected to the upper pressing plate (5), and connecting columns are fixedly installed on the end surface of the rotating CAM knife block (7) and the side surface of the upper pressing plate (5), and springs are connected to the two connecting columns. The springs are arranged in an inclined manner under normal conditions, and the bottom of the rotating CAM knife block (7) has a pressing surface adapted to the lower punch (8).

2. A production device for lock-type parts according to claim 1, characterized in that: Two rotating CAM cutter blocks (7) are arranged at intervals, corresponding to the positions on both sides of the protrusion of the lower punch (8) respectively.

3. A production device for lock-type parts according to claim 2, characterized in that: The end surface of the lower punch (8) is provided with a buffer polyurethane block for buffering when in contact with the upper pressing plate (5).

4. A production device for lock-type parts according to claim 3, characterized in that: The output end of the ejection cylinder (1) is connected to a feeding rack (2) for use in the feeding process of the sheet metal on the supporting rack.

5. A production device for lock-type parts according to claim 4, characterized in that: It also includes a material blocking frame (3) and a material blocking plate (6) for limiting the position of the sheet material during feeding.

6. The production device for lock-type parts according to claim 1, characterized in that: The rotating CAM blade block (7) as a whole is a structure for cutting out a molding pressing surface on a circular structure.

7. The production device for lock-type parts according to claim 2, characterized in that: The lower punch (8) is made of air-cooled steel or 45# steel.

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