Fixed-length cutting device of spring machine

Abstract

The utility model discloses a spring machine fixed-length cutting device which comprises a spring machine body, a spring winding assembly and a cutting tool, and a fixed-length mechanism is arranged at an outlet of the spring winding assembly. The length fixing mechanism comprises a supporting plate, connecting plates are arranged at the front end and the rear end of the supporting plate respectively, rotating shafts are arranged on the connecting plates, the upper end of a rotating plate is connected with the rotating shafts to achieve rotation, and in the normal state, the supporting plate and the rotating plate form a V-shaped groove used for receiving spring products. The top of the supporting plate is further provided with a sliding block capable of sliding, the sliding block is further provided with an electrified contact rod, and the far end of the spring can collide with the contact rod to achieve circuit access. The supporting plate is installed at the outlet of the spring machine, the sliding block is installed on the supporting plate, the electrified contact rod is installed on the sliding block, when the far end of the spring touches the contact rod, an electric signal is given to a machine tool, the cut-off tool at the outlet of the machine tool conducts cut-off, and therefore the automatic cut-off process is achieved, and the length precision is high.

Description

Technical Field

[0001] This utility model relates to the technical field of through-wire manufacturing equipment, specifically a fixed-length cutting device for a spring machine. Background Technology

[0002] A spring machine is a mechanical device used to produce springs. The increasing variety and precision of springs have placed higher demands on spring machines. Spring components are used in wire drawing, and they need to be cut to specified lengths during the production process.

[0003] However, existing spring machines first produce a spring strip of a specified length as a template when producing springs. Then, workers cut the springs produced after comparing them with the template. The spring machine is equipped with a cutting blade, and the cutting command of the cutting blade is controlled by manually operating a switch.

[0004] This method increases the workload of workers, and manual cutting cannot accurately control the required length of the spring, resulting in inconsistent lengths and a decline in product quality.

[0005] Later, in an attempt to cut corners, the workers would first make a long spring strip and then cut it according to a template. This would cause errors in the last section, often resulting in it being shorter than the specified size.

[0006] We also contacted spring machine manufacturers to ask them to provide a fixed-length device, but their quotes were too high. In order to save costs, our company's technicians provided a fixed-length cutting device for spring machines. Utility Model Content

[0007] The purpose of this invention is to provide a fixed-length cutting device for spring machines to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A fixed-length cutting device for a spring machine includes a spring machine body, the spring machine body having a spring winding assembly and a cutting blade, the cutting blade being disposed around the outlet of the spring winding assembly.

[0010] A length-fixing mechanism is provided on the outside of the outlet of the spring winding assembly;

[0011] The fixed-length mechanism includes a support plate, which is fixed to the machine base of the spring machine body by a mounting bracket;

[0012] The support plate is provided with a horizontally extending connecting plate at both the front and rear ends. The connecting plate is provided with a rotating shaft. The upper end of the rotating plate is connected to the rotating shaft to achieve rotation. In normal condition, the support plate and the rotating plate form a V-shaped groove to receive the spring product.

[0013] An arc-shaped first spring wraps around the bottom of the support plate and the rotating plate and hooks onto the top of both respectively;

[0014] A sliding slider is also provided on the top of the support plate, and the slider is fixed in position on the support plate by fastening screws;

[0015] The slider is also equipped with a live contact rod, and the distal end of the spring product can contact the contact rod to achieve a circuit connection.

[0016] It also includes a lever frame disposed on one side of the rotating plate and a cam that drives the lever frame to swing, the cam being driven to rotate by a motor;

[0017] The actuating frame includes a rotating column, which is rotatably mounted on the spring mechanism body. The rotating column has an actuating pawl on one side near the rotating plate and a swing rod on the other side. The top of the swing rod has a follower column that is in contact with the cam.

[0018] The outer surface of the rotating plate is provided with a follower plate, and the top of the actuating claw abuts against the follower plate to actuate the follower plate;

[0019] The rotating column is also provided with a backing plate on the side away from the rotating plate, and the spring mechanism body is provided with a fixing plate. The two ends of the second spring are respectively connected to the backing plate and the fixing plate.

[0020] Furthermore, the bottom of the connecting plate at the rear end of the support plate is provided with a notch, which is used to allow the spring product to enter the V-shaped groove.

[0021] Beneficial effects:

[0022] This utility model employs a support plate installed at the outlet of a spring machine, a movable slider installed on the support plate, and an energized contact rod installed on the slider. When the far end of the spring product touches the contact rod, an electrical signal is sent to the machine tool, and the cutting blade at the outlet of the machine tool cuts it off, thereby realizing an automatic cutting process with high length accuracy.

[0023] By adjusting the position of the slider, spring products of different lengths can be processed, which has the advantage of convenient adjustment;

[0024] The entire process is automated, requiring no human intervention, and has a high degree of automation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0027] Figure 3 This is a schematic diagram of the length-fixing mechanism of this utility model;

[0028] Figure 4 This is a second-view schematic diagram of the fixed-length mechanism of this utility model;

[0029] Figure 5 This is a third-view schematic diagram of the fixed-length mechanism of this utility model;

[0030] Figure 6 This is a front view of the fixed-length mechanism of this utility model;

[0031] In the picture:

[0032] 1-Spring machine body, 2-Cut-off blade, 3-Length fixing mechanism;

[0033] 3.1-Slider, 3.2-Contact rod, 3.3-Support plate, 3.4-Connecting plate, 3.5-First spring, 3.6-Mounting bracket, 3.7-Rotating plate, 3.8-Actuating bracket, 3.9-Fixing plate, 3.10-Second spring, 3.11-Cam, 3.12-Rotating shaft;

[0034] 3.1.1 - Fastening screws;

[0035] 3.7.1 - Follower board;

[0036] 3.8.1-Rotating column, 3.8.2-Actuating pawl, 3.8.3-Side plate, 3.8.4-Swing rod, 3.8.5-Follower column. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Please see Figures 1 to 2 The present invention provides a technical solution as follows:

[0039] A fixed-length cutting device for a spring machine includes a spring machine body 1, the spring machine body 1 having a spring winding assembly and a cutting blade 2, the cutting blade 2 being disposed around the outlet of the spring winding assembly.

[0040] Both the cutting blade 2 and the spring winding assembly are existing technologies and are not shown in detail in the figure. Those skilled in the art can know the specific structure of the cutting blade 2 and the spring winding assembly based on existing patent documents.

[0041] A length-fixing mechanism 3 is provided on the outer side of the outlet of the spring winding assembly;

[0042] Please see Figures 3 to 5 The fixed length mechanism 3 includes a support plate 3.3, which is fixed to the machine base of the spring machine body 1 by a mounting bracket 3.6;

[0043] The support plate 3.3 has a horizontally extending connecting plate 3.4 at its front and rear ends respectively. The connecting plate 3.4 is provided with a rotating shaft 3.12. The upper end of the rotating plate 3.7 is connected to the rotating shaft 3.12 to achieve rotation. In normal condition, the support plate 3.3 and the rotating plate 3.7 form a V-shaped groove to receive the spring product.

[0044] An arc-shaped first spring 3.5 wraps around the bottom of the support plate 3.3 and the rotating plate 3.7 and hooks onto the top of both, respectively, to maintain the integrity of the V-shaped groove;

[0045] A sliding slider 3.1 is also provided on the top of the support plate 3.3. The slider 3.1 is fixed on the support plate 3.3 by fastening screws 3.1.1.

[0046] The slider 3.1 is also equipped with a live contact rod 3.2. The distal end of the spring product can come into contact with the contact rod 3.2 to achieve a circuit. It should be noted that the voltage of the contact rod 3.2 is a safe voltage and will not cause personal safety accidents.

[0047] It also includes a lever 3.8 disposed on one side of the rotating plate 3.7 and a cam 3.11 that drives the lever 3.8 to swing. The cam 3.11 is driven to rotate by a motor inside the machine base of the spring machine body 1 (not shown in the figure).

[0048] Please see Figure 6 The actuating frame 3.8 includes a rotating column 3.8.1, which is rotatably mounted on the spring mechanism body 1. The rotating column 3.8.1 has an actuating pawl 3.8.2 on one side near the rotating plate 3.7, and a swing rod 3.8.4 on the other side. The top of the swing rod 3.8.4 has a follower column 3.8.5 that abuts against the cam 3.11.

[0049] The outer surface of the rotating plate 3.7 is provided with a follower plate 3.7.1, and the top of the actuating claw 3.8.2 abuts against the follower plate 3.7.1 to actuate the follower plate 3.7.1;

[0050] In the figure, cam 3.11 rotates counterclockwise and drives the swing arm 3.8.4 to swing to the right, which in turn drives the pawl 3.8.2 to swing to the right, so that the bottom of the rotating plate 3.7 moves away from the support plate 3.3, and the spring product falls out of the notch;

[0051] The rotating column 3.8.1 is also provided with a backing plate 3.8.3 on the side away from the rotating plate 3.7. The spring mechanism body 1 is provided with a fixing plate 3.9. The two ends of the second spring 3.10 are respectively connected to the backing plate 3.8.3 and the fixing plate 3.9. The function of the second spring 3.10 is to push the backing plate 3.8.3 to the left, so that the follower column 3.8.5 and the cam 3.11 are always in contact, that is, to keep the bottom of the rotating plate 3.7 in contact with the bottom of the support plate 3.3.

[0052] The method of use is as follows: First, install the slider 3.1 into the appropriate position on the support plate 3.3 and energize the contact rod 3.2. At this time, the bottom of the rotating plate 3.7 is in contact with the bottom of the support plate 3.3. The spring winding assembly begins to wind the spring product. At the same time, the cam 3.11 begins to rotate counterclockwise. When the far end of the spring product contacts the contact rod 3.2, an electrical signal is sent to the machine tool. The cutting blade at the exit of the machine tool cuts off the spring product. At the same time as the cutting off, the working curve of the cam 3.11 reaches the most convex position to drive the actuating claw 3.8.2, which drives the follower plate 3.7.1 to swing at the same time, so that the bottom of the rotating plate 3.7 moves away from the support plate 3.3, and the spring product falls from the notch.

[0053] After the cam 3.11 rotates through the work curve, the second spring 3.10 pushes the abutment plate 3.8.3 to the left, and at the same time, the first spring 3.5 acts to make the bottom of the rotating plate 3.7 fit against the bottom of the support plate 3.3, thus closing the notch and entering the next cycle.

[0054] This utility model employs a support plate 3.3 installed at the outlet of the spring machine, a movable slider 3.1 installed on the support plate 3.3, and an energized contact rod 3.2 installed on the slider 3.1. When the far end of the spring product touches the contact rod 3.2, an electrical signal is sent to the machine tool, and the cutting blade 2 at the outlet of the machine tool cuts it, thereby realizing an automatic cutting process with high length accuracy.

[0055] By adjusting the position of slider 3.1, spring products of different lengths can be processed, which has the advantage of convenient adjustment;

[0056] The entire process is automated, requiring no human intervention, and has a high degree of automation.

[0057] Please see Figure 5 and Figure 6The bottom of the connecting plate 3.4 at the rear end of the support plate 3.3 is provided with a notch, which is used to allow the spring product to enter the V-shaped groove.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A spring machine length cutting device, comprising a spring machine body, the spring machine body having a spring winding assembly and a cutting knife, the cutting knife being arranged around an outlet of the spring winding assembly, characterized in that: a length setting mechanism is arranged outside the outlet of the spring winding assembly; the length setting mechanism comprises a support plate, the support plate being fixed to a machine table of the spring machine body through a mounting frame; the support plate is provided with a transversely extending connecting plate at each of the front and rear ends, the connecting plate being provided with a rotating shaft, the upper end of a rotating plate being connected to the rotating shaft to realize rotation, in a normal state, the support plate and the rotating plate forming a V-shaped groove for catching a spring product; a first arc-shaped spring is wrapped around the bottom of the support plate and the rotating plate and hooked to the top of each of the support plate and the rotating plate respectively; a slidable sliding block is further arranged at the top of the support plate, the position of the sliding block on the support plate being fixed through a fastening screw; a charged contact rod is further arranged on the sliding block, the distal end of the spring product being able to collide with the contact rod to realize circuit passage; a toggle frame arranged at one side of the rotating plate and a cam driving the toggle frame to swing are further included, the cam being driven to rotate by a motor; the toggle frame comprises a rotating column, the rotating column being rotatably arranged on the spring machine body, the rotating column being provided with a toggle claw close to one side of the rotating plate and a swing rod at the other side, the top of the swing rod being provided with a follower column abutting against the cam; the outer surface of the rotating plate is provided with a follower plate, the top of the toggle claw abutting against the follower plate to realize toggling of the follower plate; the rotating column is further provided with a leaning plate away from one side of the rotating plate, the spring machine body being provided with a fixed plate, the two ends of a second spring being connected to the leaning plate and the fixed plate respectively.

2. A length cutting device for a spring machine according to claim 1, characterized in that the connecting plate at the rear end of the support plate is provided with a notch at the bottom, the notch being used for the spring product to enter the V-shaped groove.

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