Automatic strip thickness monitoring and protecting auxiliary device for multi-station progressive die

Abstract

The utility model discloses an automatic strip thickness monitoring and protecting auxiliary device for a multi-station progressive die, which comprises a stock supporting plate, a supporting seat, a normally closed limit switch, a lever and a monitoring piece, the supporting seat is connected onto the stock supporting plate, the lever is rotatably connected onto the supporting seat, and the normally closed limit switch is connected onto the monitoring piece. A monitoring piece is connected to one end of the lever, a normally-closed limit switch is connected to the portion, below the other end of the lever, of the material bearing plate, the monitoring piece is composed of a monitoring part and a connecting part, the connecting part is used for being detachably connected with the lever, and the span of the monitoring part is matched with the width of a strip supported on the material bearing plate; the bottom of the monitoring part is smooth and clings to the upper surface of the strip. According to the utility model, thickness monitoring of the whole width and the whole length of the strip can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to material thickness detection technical field, concretely relates to a kind of automatic monitoring protection auxiliary device for strip thickness of multi-station progressive die. BACKGROUND

[0002] Multi-station progressive die is a kind of high-precision, high-efficiency, long-life metal stamping die, can complete multiple processes in single stroke, and is mainly used for producing batch, complex shape, high-precision thin material. When producing, strip material is fed from one side of the die, and under the condition of strictly controlling the step accuracy, the strip material is punched in sequence through each station according to the order arranged in the forming process, and after being punched or cut off in the last station, the parts meeting the product quality requirements can be produced.

[0003] In actual use, when the material thickness exceeds the maximum limit size set by the press, the die and the press equipment will be damaged, so the material thickness tolerance should be strictly controlled. At present, the strip material used in multi-station progressive die production is mostly supplied in the form of coil material, and generally only the outer material thickness of the coil material can be detected when purchasing or detected by segment sampling, it is difficult to detect the thickness of the coil material in the full length and full width range, and if all the strip materials are measured after being fully expanded, it will be time-consuming and costly, therefore, the thickness accuracy of each part of the strip material actually depends on the production technology and credibility of the supplier, and in the production process, the workpiece accuracy may not meet the requirements due to the material thickness exceeding the tolerance, and even the die is damaged and equipment accidents occur. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model aims to provide a multi-station progressive die strip thickness automatic monitoring protection auxiliary device with a reasonable structure design, which can realize automatic monitoring and protection of the thickness of the strip material in the full length and full width range.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0006] A multi-station progressive die strip thickness automatic monitoring protection auxiliary device, comprising a material receiving plate, a support seat, a normally closed limit switch, a lever and a monitoring piece, wherein the support seat is connected to the material receiving plate, the lever is rotatably connected to the support seat, the monitoring piece is connected to one end of the lever, and the normally closed limit switch is connected to the material receiving plate below the other end of the lever, characterized in that the monitoring piece is composed of a monitoring part and a connecting part, wherein the connecting part is used for detachable connection with the lever, the monitoring part has a span matched with the width of the strip material supported on the material receiving plate, and the bottom of the monitoring part is smooth and tightly attached to the upper surface of the strip material.

[0007] Preferably, the normally closed limit switch is connected to the material receiving plate through an adjustable support and an adjustable support plate, wherein the adjustable support is detachably connected to the material receiving plate and can move forward and backward relative to the material receiving plate, and the adjustable support plate is detachably connected to the adjustable support and can move up and down relative to the adjustable support. By moving the adjustable support forward and backward, the front and rear positions of the normally closed limit switch are adjusted to adapt to different widths of the strip material.

[0008] Preferably, the support seat is composed of a front support seat and a rear support seat, and the front support seat and the rear support seat can move towards or away from each other relative to the material receiving plate; a support pin is detachably connected between the top of the front support seat and the top of the rear support seat, a circular hole is formed in the lever for the support pin to pass through, the axis of the circular hole is perpendicular to the extension direction of the lever, and the lever rotates relative to the support pin; and the front support seat and the rear support seat form a strip material guide groove.

[0009] Preferably, two compression springs are connected to the bottom of the lever and away from the monitoring member, one end of one of the compression springs is placed in and connected to a receiving groove formed in the corresponding position of the front support seat, and the other end of the other compression spring is placed in and connected to a receiving groove formed in the corresponding position of the rear support seat.

[0010] Compared with the prior art, the utility model has the beneficial effects as follows:

[0011] 1. The utility model discloses a monitoring member, which can match the span of the monitoring member with the width of the strip material to monitor the thickness of the strip material in the full width and full length, and the monitoring member is detachably connected to the lever, so that the monitoring member can be conveniently replaced.

[0012] 2. The utility model discloses a monitoring member, a normally closed limit switch and the like, as long as the thickness of the strip material is less than or equal to the maximum limit size set by the press, the normally closed limit switch will not work, and the stamping production can be carried out normally. However, once the thickness of the strip material is detected to be greater than the maximum limit size, the end of the lever monitoring member is lifted, the other end of the lever is pressed down to make the normally closed limit switch work, and the press is stopped by being powered off.

[0013] 3. The position of the normally closed limit switch of the utility model can be adjusted up and down or forward and backward, so that the utility model is more convenient to use and has a wider application range.

[0014] 4. The distance between the front support seat and the rear support seat of the utility model can be adjusted according to the width of the strip material, so that the front support seat and the rear support seat can guide and limit the strip material of different widths, the strip material can be fed more accurately, and the monitoring is more accurate and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front structure sectional view of the utility model;

[0016] Figure 2 for Figure 1 A-A sectional view of the utility model;

[0017] Figure 3 for the utility model is a top view schematic diagram;

[0018] Figure 4 for the utility model is the monitoring member side structure schematic diagram;

[0019] Figure 5 for the utility model is the monitoring member front structure schematic diagram;

[0020] Figure 6 for the utility model is the pivot structure schematic diagram;

[0021] Figure 7 for the utility model is the structure top view schematic diagram of front support seat or rear support seat; DETAILED DESCRIPTION

[0022] The utility model will be further described below in conjunction with the drawings and examples, need understanding, the following described specific examples are only for explaining the utility model, and do not limit the utility model. In the description of the utility model, need understanding, involve the orientation description, for example, the orientation or position relation such as upper, lower, front, back etc. based on the orientation and position relation shown in the drawing, meet the national mapping standard, only for the convenience of simplifying the description of the utility model, and not indicate or imply the described device or part must have the specific orientation, therefore, can not be understood as the limitation of the utility model.

[0023] As Figures 1-7 shown, the utility model discloses a multi-station progressive die with strip thickness automatic monitoring protection auxiliary device, including the material receiving plate 8, front support seat 12, rear support seat 6, normally closed limit switch 1, lever 2, compression spring 3, pivot 4, carbon fiber monitoring member 5, lower mould 9, adjustable support 10 and adjustable support plate 11. Among them, the material receiving plate 8 is fixed in the right side of the multi-station progressive die lower mould 9 through screw and pin, requires the upper end surface of material receiving plate 8 and the upper end surface of lower mould 9 flush, facilitate strip material to be sent into progressive die on material receiving plate 8 smoothly. The waist type hole (the front-back direction of aperture direction) is set up on the material receiving plate 8 and suitable position, through screw and washer, adjustable support 10 is detachably connected on material receiving plate 8 by conventional mode, the waist type hole is also opened on adjustable support 10, and the hole distance direction of the waist type hole is Figure 3 . Figure 1In the vertical direction, the adjustable support plate 11 is detachably connected to the adjustable support 10 using screws and washers in a conventional manner. The normally closed limit switch 1 is fixedly connected to the top of the adjustable support plate 11 to achieve position adjustment in four directions: up, down, forward, and backward. The normally closed limit switch 1 is connected to the stop circuit of the press for material thickness exceeding tolerance. By pressing down the normally closed limit switch 1 to cut off the power, the press stops working.

[0024] The front support base 12 and the rear support base 6 have identical structural shapes and are symmetrically arranged. Both the front support base 12 and the rear support base 6 are detachably connected to the support plate 8 by bolts and washers. Correspondingly, the support plate 8 has oblong holes for the installation of the front support base 12 and the rear support base 6, respectively. The diameter direction of these two oblong holes is as follows: Figure 3 The front and rear supports are arranged in a front-to-back direction, and the two waist-shaped holes are positioned opposite each other. The front support 12 and the rear support 6 form a material guide groove. The gap between the front support 12 and the rear support 6 can be adjusted by means of the waist-shaped holes to accommodate the guidance of materials of different widths.

[0025] A pin 4 is inserted between the tops of the front support 12 and the rear support 6. For example... Figure 2 , Figure 5 As shown, the right end of the support pin 4 is designed with threads, and the diameter of the threaded section is smaller than the diameter of the smooth rod section (the middle is the smooth rod section). The diameter of the shoulder at the left end of the support pin 4 is larger than the diameter of the smooth rod section. The threaded section of the support pin 4 starts from... Figure 2 The rear support 6 at the left end and the front support 12 at the right end pass through and are locked to the right end of the front support 12 with a nut. A lever 2 is assembled on the smooth section of the support pin 4, that is, a round hole for the support pin 4 to pass through is opened at the middle position or near the middle position of the lever 2. The round hole and the smooth section of the support pin 4 are clearance fit so that the lever 2 can swing flexibly around the support pin 4.

[0026] One end of lever 2 along its length ( Figure 1 The right end of the device is detachably connected to a monitoring component. This monitoring component is made of carbon fiber and is therefore called the carbon fiber monitoring component 5. The carbon fiber monitoring component 5 consists of an upper connecting part and a lower monitoring part. The connecting part has threads machined on its outer circumference, and the connecting part and the monitoring part form a shoulder. The bottom of the monitoring part is a smooth protrusion; viewed from the side, the bottom of the monitoring part is a smooth semi-circular protrusion. The length (also called span) of the monitoring part is consistent with the width of the strip to be monitored. The connecting part of the carbon fiber monitoring component 5 passes through a hole in the lever 2 and is locked with a nut and a washer to achieve a detachable connection between the carbon fiber monitoring component and the lever 2. The semi-circular protrusion of the monitoring part fits tightly against the upper surface of the strip to be monitored, thus enabling the monitoring of the strip thickness.

[0027] The other end of lever 2 in the length direction ( Figure 1The right end of the lever 2 is provided with a carbon fiber monitoring piece 5, and the left end of the lever 2 is provided with a normally closed limit switch 1, and the bottom of the lever 2 is abutted with two cylindrical compression springs 3 near the normally closed limit switch 1, and the front support seat 12 and the rear support seat 6 are correspondingly provided with accommodating grooves, and each cylindrical compression spring 3 is arranged in the corresponding accommodating groove and connected with the accommodating groove, and the compression spring 3 is required to have a small pre-compression amount.

[0028] In use, the multi-station progressive die uses the strip material installed on the winding frame, the strip material is leveled by the automatic leveling mechanism, is sent to the material receiving plate 8 installed on the right side of the lower die of the progressive die by the automatic feeding mechanism, the strip material is guided by the guide groove formed between the front support seat 12 and the rear support seat 6, and the strip material is pushed forward on the material receiving plate 8 according to the feeding pitch, and under the action of the compression spring 3, the carbon fiber monitoring piece 5 is tightly attached to the upper surface of the strip material. When the thickness of the strip material is out of tolerance, the carbon fiber monitoring piece 5 moves upward to lift one end of the lever, and the other end of the lever swings downward to press the normally closed limit switch 1, the circuit is powered off to stop the press, thereby playing a role in protecting the progressive die and the pressure equipment. The utility model has the advantages of simple structure, flexible adjustment and wide application prospect in the production of the multi-station progressive die.

Claims

1. A kind of multi-station progressive die with strip thickness automatic monitoring protection auxiliary device, including material receiving plate, support seat, normally closed limit switch, lever and monitoring piece, wherein support seat is connected on material receiving plate, lever is rotatably connected on support seat, monitoring piece is connected on one end of lever, normally closed limit switch is connected on material receiving plate below the other end of lever, it is characterized in that, The monitoring member is composed of a monitoring part and a connecting part, wherein the connecting part is used for detachable connection with the lever, the monitoring part has a span matching the width of the strip material supported on the material receiving plate, and the bottom of the monitoring part is smooth and closely attached to the upper surface of the strip material.

2. The strip thickness automatic monitoring and protection auxiliary device for multi-position progressive die according to claim 1, characterized in that, The normally closed limit switch is connected to the material receiving plate through an adjustable support and an adjustable support plate, wherein the adjustable support is detachably connected to the material receiving plate and moves in the front-back direction relative to the material receiving plate, and the adjustable support plate is detachably connected to the adjustable support and moves in the up-down direction relative to the adjustable support.

3. The strip thickness automatic monitoring and protection auxiliary device for multi-position progressive die according to claim 1 or 2, characterized in that, The support seat is composed of a front support seat and a rear support seat, and both the front support seat and the rear support seat move in a direction in which the front support seat and the rear support seat approach or deviate from each other relative to the material receiving plate; a support pin is detachably connected between the top of the front support seat and the top of the rear support seat, a circular hole is formed in the lever to allow the support pin to pass through, the axial direction of the circular hole is perpendicular to the extension direction of the lever, and the lever rotates relative to the support pin; and a strip material guide groove is formed between the front support seat and the rear support seat.

4. The strip thickness automatic monitoring and protection auxiliary device for multi-position progressive die according to claim 3, characterized in that, Two compression springs are arranged at the bottom of the lever and away from the monitoring member, one end of one of the compression springs is arranged in and connected to a receiving groove formed at the corresponding position of the front support seat, and the other end of the other compression spring is arranged in and connected to a receiving groove formed at the corresponding position of the rear support seat.

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