Nut riveting fool-proof die

Abstract

The utility model discloses a nut riveting fool-proof die which comprises an upper die base and a lower die base which are arranged up and down, a guide column is arranged between the upper die base and the lower die base, an upper base plate is arranged below the upper die base, a lower base plate is arranged on the lower die base, a lower die plate is arranged on the lower base plate, and a spring is arranged in the upper die base. A riveting punch is arranged in the upper base plate in the vertical direction, the upper end of the riveting punch is connected with the lower end of a spring, a reset rod is slidably arranged in the upper base plate in the horizontal direction, a clamping groove matched with the front end of the reset rod is formed in the side face of the riveting punch, and a pressure sensor is arranged below the upper die base and used for detecting the rear end of the reset rod. The pressure sensor is electrically connected with the die control system, the lower die plate is provided with a floating pin located under the riveting punch, the floating pin is sleeved with a nut and a product, and the upper die base moves downwards to drive the riveting punch to rivet the nut on the product. The nut riveting fool-proof die provided by the utility model can avoid the phenomenon that nuts are misplaced and the die is crushed.

Description

Technical Field

[0001] The utility model relates to a nut riveting and fool-proofing die, belonging to the technical field of die riveting. Background Art

[0002] In the prior art, two nuts of different specifications, M5 and M6, are manually placed on the product in the mold for riveting and forming. Since the shapes of M5 and M6 nuts are almost the same, it is easy to place the nuts incorrectly when placing them manually, and the product will be deformed, resulting in a high defect rate. At the same time, it is easy to damage the mold and cause safety accidents and injuries. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a nut riveting and fool-proofing die, which can prevent the nut from being misplaced and the die from being damaged.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A nut riveting fool-proof mold, comprising an upper mold base and a lower mold base arranged up and down, a guide column is arranged between the upper mold base and the lower mold base, an upper pad is arranged under the upper mold base, a lower pad is arranged on the lower mold base, a lower mold plate is arranged on the lower pad, a spring is arranged in the upper mold base, a riveting punch is arranged in the vertical direction of the upper pad, the upper end of the riveting punch is connected to the lower end of the spring, a reset rod is arranged in the horizontal direction of the upper pad, a slot is provided on the side of the riveting punch to cooperate with the front end of the reset rod, a pressure sensor is arranged under the upper mold base, the pressure sensor is used to detect the rear end of the reset rod, the pressure sensor is electrically connected to the mold control system, a floating pin is arranged on the lower mold base and is located directly below the riveting punch, a nut and a product are sleeved on the floating pin, the nut models include M5 and M6, the riveting punch head is provided with a slot for clamping the nut, and the downward movement of the upper mold base drives the riveting punch to rivet the nut onto the product.

[0006] Upper guide rails for supporting the upper pad are connected to the left and right sides of the lower surface of the upper die seat, and the upper pad moves forward and backward along the length direction of the upper guide rails.

[0007] The transverse cross-sections of the upper guide rails are all L-shaped.

[0008] The left and right sides of the upper surface of the lower die base are connected with lower guide rails, and the lower pad moves forward and backward along the length direction of the lower guide rails.

[0009] The transverse cross section of the lower guide rail is L-shaped.

[0010] The riveting punch, the reset rod, the pressure sensor, the floating pin, the nut and the product are divided into three groups.

[0011] The beneficial effects of the utility model include: a nut riveting anti-misplacement mold provided by the utility model, a reset rod is horizontally slidably arranged in the upper pad, a slot matching the front end of the reset rod is opened on the side of the riveting punch, a pressure sensor is arranged under the upper die seat, the pressure sensor is used to detect the rear end of the reset rod, the pressure sensor is electrically connected to the mold control system, when the nut is misplaced, the reset rod cannot enter the slot on the side of the riveting punch for reset, the reset rod moves backwards, is sensed by the pressure sensor, and the signal is transmitted to the mold control system, an alarm is issued and the equipment is controlled to shut down, which can avoid the occurrence of nut misplacement and damage to the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of a nut riveting and fool-proofing die of the utility model (normal arrangement);

[0013] Figure 2 This is a structural schematic diagram of a nut riveting anti-mistake mold of the utility model (wrong placement).

[0014] The reference numerals in the figure are as follows: 1-upper die base; 2-reset rod; 3-guide column; 4-upper guide rail; 5-lower guide rail; 6-spring; 7-pressure sensor; 8-reset rod; 9-riveting punch; 10-lower template; 11-lower pad; 12-lifting pin; 13-nut; 14-upper pad; 15-product; 91-slot. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are not intended to limit the protection scope of the present invention.

[0016] like Figure 1 As shown, the utility model provides a nut riveting fool-proof die, including an upper die seat 1 and a lower die seat 2 arranged up and down, a guide column 3 is arranged between the upper die seat 1 and the lower die seat 2, an upper pad 14 is arranged below the upper die seat 1, a lower pad 11 is arranged above the lower die seat 2, a lower mold plate 10 is arranged on the lower pad 11, a spring 6 is arranged inside the upper die seat 1, a riveting punch 9 is arranged vertically inside the upper pad 14, and the upper end of the riveting punch 9 is connected to the lower end of the spring 6. The riveting punch 9 is driven to move downward by the downward movement of the upper die seat 1 to perform the riveting action.

[0017] The lower template 10 is provided with a floating pin 12 located directly below the riveting punch 9, and the floating pin 12 is sleeved with a nut 13 and a product 15. The head of the riveting punch 9 is provided with a slot for clamping the nut 13, and the upper die seat 1 moves downward to drive the riveting punch 9 to rivet the nut 13 onto the product 15. In the utility model, the nut 13 includes two types, M5 and M6, and the two nuts are almost equal in appearance. The size of the slot on the head of the riveting punch 9 is designed to correspond to the external size of the M5 nut or the M6 ​​nut, so that the M5 nut or the M6 ​​nut can be just inserted into the slot on the head of the riveting punch 9. When the M5 nut is misplaced as the M6 ​​nut, the M6 ​​nut cannot be inserted into the slot on the head of the riveting punch 9. The riveting punch 9, the reset rod 8, the pressure sensor 7, the floating pin 12, the nut 13 and the product 15 are three groups, and the M6 ​​nut, the M5 nut and the M5 nut are placed from left to right.

[0018] A reset rod 8 is provided in the upper pad 14 for horizontal sliding. A slot 91 cooperating with the front end of the reset rod 8 is provided on the side of the riveting punch 9. A pressure sensor 7 is provided under the upper die seat 1. The pressure sensor 7 is used to detect the rear end of the reset rod 8. The pressure sensor 7 is electrically connected to the mold control system. Under normal circumstances, the nut 13 is placed correctly, the nut is inserted into the slot on the head of the riveting punch 9, the front end of the reset rod 8 is inserted into the slot 91, and the pressure sensor 7 cannot monitor the pressure. Under abnormal circumstances, the nut 13 is placed incorrectly, the nut is not inserted into the slot on the head of the riveting punch 9, the front end of the reset rod 8 is not inserted into the slot 91, the reset rod 8 moves backward, and the pressure sensor 7 monitors the pressure.

[0019] Upper guide rails 4 for supporting upper pads 14 are connected to the left and right sides of the lower surface of the upper die base 1. The transverse cross-section of the upper guide rails 4 is L-shaped, and the upper pads 14 move forward and backward along the length direction of the upper guide rails 4. Lower guide rails 5 are connected to the left and right sides of the upper surface of the lower die base 2. The transverse cross-section of the lower guide rails 5 is L-shaped, and the lower pads 11 move forward and backward along the length direction of the lower guide rails 5. The utility model can facilitate the upper pads 14 and the lower pads 11 to slide out of the mold to put in the nuts through the arrangement of the upper guide rails 4 and the lower guide rails 5, and then slide the upper pads 14 and the lower pads 11 into the mold for subsequent riveting process.

[0020] The working principle of the utility model is as follows: Figure 1 As shown, the upper die seat 1 moves downward, and when the nut 13 is placed normally, the head of the riveting punch 9 is smoothly combined with the nut 13, so that the reset rod 8 enters the slot 91 on the side of the riveting punch 9 to reset, the pressure sensor 7 detects normally, and the equipment is riveting normally; Figure 2 As shown in the figure, when the nut is placed incorrectly, the M5 nut is placed as M6 ( Figure 2 When the riveting punch 9 moves downward and abuts against the nut 13, the nut 13 cannot enter the head of the riveting punch 9 because the outer diameter of the M6 ​​nut is larger than that of the M5 nut ( Figure 2 The riveting punch 9 compresses the spring 6 and moves upward, so that the reset rod 8 cannot enter the slot 91 on the side of the riveting punch 9 for reset. The reset rod 8 moves backward and is sensed by the pressure sensor 7, which transmits the signal to the mold control system to sound an alarm and control the equipment to shut down.

[0021] The above are only preferred implementations of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A nut riveting foolproof die, characterized in that: The invention comprises an upper die seat (1) and a lower die seat (2) which are arranged in the upper and lower parts, a guide column (3) is arranged between the upper die seat (1) and the lower die seat (2), an upper pad (14) is arranged below the upper die seat (1), a lower pad (11) is arranged above the lower die seat (2), a lower template (10) is arranged on the lower pad (11), a spring (6) is arranged inside the upper die seat (1), a riveting punch (9) is arranged vertically inside the upper pad (14), the upper end of the riveting punch (9) is connected to the lower end of the spring (6), a reset rod (8) is arranged horizontally in the upper pad (14) for sliding, and a side of the riveting punch (9) is provided with a spring (6) which is connected to the lower end of the spring (6). A slot (91) is matched with the front end of the reset rod (8), a pressure sensor (7) is arranged below the upper die seat (1), the pressure sensor (7) is used to detect the rear end of the reset rod (8), the pressure sensor (7) is electrically connected to the mold control system, the lower die plate (10) is provided with a floating pin (12) located directly below the riveting punch (9), a nut (13) and a product (15) are sleeved on the floating pin (12), the head of the riveting punch (9) is provided with a slot for clamping the nut (13), and the upper die seat (1) moves downward to drive the riveting punch (9) to rivet the nut (13) onto the product (15).

2. A nut riveting foolproof die according to claim 1, characterized in that: Upper guide rails (4) for supporting the upper pad (14) are connected to the left and right sides of the lower surface of the upper die seat (1), and the upper pad (14) moves forward and backward along the length direction of the upper guide rails (4).

3. A nut riveting foolproof die according to claim 2, characterized in that: The transverse cross-sections of the upper guide rails (4) are all L-shaped.

4. A nut riveting foolproof die according to claim 1, characterized in that: The left and right sides of the upper surface of the lower die base (2) are connected to lower guide rails (5), and the lower pad (11) moves forward and backward along the length direction of the lower guide rails (5).

5. A nut riveting foolproof die according to claim 4, characterized in that: The transverse cross section of the lower guide rail (5) is L-shaped.

6. A nut riveting foolproof die according to claim 1, characterized in that: The riveting punch (9), the reset rod (8), the pressure sensor (7), the floating pin (12), the nut (13) and the product (15) are three groups.

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