Cold rolling suspension spiral spring pitch tool

Abstract

The utility model provides a cold rolling suspension spiral spring pitch tool, which relates to the technical field of spring section processing and comprises a processing disc body and a movable block, and the front surface of the movable block is fixedly connected with a first mounting shell. According to the processing disc, the driving mechanism in the processing disc body pushes the mounting seat to move forwards in the coiling process of a spring raw material, at the moment, the pitch stop lever can push the tail end of the spring raw material which is coiled forwards, and the pitch of a formed suspension spring can be changed along with the change of the forward pushing distance of the pitch stop lever; when friction occurs between the pitch stop lever and the cold coil spring raw material in the process that the pitch stop lever pushes the cold coil spring raw material, the pin roller can drive the pitch stop lever to rotate passively under the action of the bearing, and then sliding friction is converted into rolling friction, so that suspension spiral spring workpieces with different pitches are machined according to needs; the problem that the product quality is poor due to hard friction between a conventional pitch tool and a raw material piece is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of spring joint processing, in particular to a cold-rolled suspension helical spring pitch tooling. Background Art

[0002] During the production process of cold-rolled suspension coil springs, the feeding mechanism of the cold coiling machine feeds the steel wire to the spring forming mechanism. The forming mechanism includes a forming wheel (to control the outer diameter of the spring) and a pitch tooling (to control the pitch of the spring). During the forming process, the material is gradually fed to complete the spring rolling. After forming, the material is cut to complete the rolling of a spring.

[0003] In the prior art, the pitch tooling used to control the spring pitch during the forming process of cold-rolled suspension coil springs is usually fixed on the driving mechanism. When the pitch is adjusted at the end of the extruded spring, the friction between the two is large, resulting in poor stability during the spring rolling process. In addition, hard friction also directly causes a high degree of damage to the surface of the raw material, affecting the quality of the finished spring. Therefore, in response to the above problems, we propose a new type of pitch tooling for cold-rolled suspension coil springs. Utility Model Content

[0004] The utility model mainly provides a cold-rolled suspension helical spring pitch tooling with small friction force, high stability and high finished product quality during the spring rolling process.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a cold-rolled suspension coil spring pitch tooling, comprising a processing disk body and a movable block, the front surface of the movable block is fixedly connected to a first mounting shell, the front surface of the first mounting shell is fixedly installed to a second mounting shell, a limiting ring is symmetrically fixedly connected between the inner surface walls of the first mounting shell and the second mounting shell, a roller is arranged between the inner surface walls of the first mounting shell and the second mounting shell, the outer surface of the roller is symmetrically fixedly connected to a bearing, and one end of the roller is fixedly connected to a pitch stop rod.

[0006] Preferably, the outer surfaces of the opposite sides of the two bearings are in contact with the outer surfaces of the opposite sides of the two limit rings, and the outer surfaces of the two bearings are in contact with the inner surfaces of the first mounting shell and the second mounting shell. The two limit rings are located between the two bearings, and after forming interference with the bearings, they play a role in limiting the position of the roller inside the first mounting shell and the second mounting shell.

[0007] Preferably, a mounting seat is provided on the front surface of the processing disk body near the upper left corner, a mounting groove is provided on the front surface of the mounting seat near the right side, and a reserved groove is provided on the front surface of the mounting seat near the left side. The mounting seat is connected to the driving mechanism inside the processing disk body and can be moved forward and backward. The mounting groove is mainly used for installing the adjustment seat, and the reserved groove is mainly used to avoid the end of the adjustment rod, and a U-shaped bracket is provided.

[0008] Preferably, an adjustment seat is fixedly installed on the rear inner wall of the mounting groove, and the left end of the adjustment seat is rotatably connected to an adjustment rod. The position of the outer surface of the adjustment rod near the left end corresponds to the position of the reserved groove. A hexagonal slot is provided on the left end of the adjustment rod, and the adjustment rod can be rotated with a hexagonal wrench.

[0009] Preferably, a movable groove is provided on the front surface of the adjustment seat, and the movable block is slidably embedded between the inner surface walls of the movable groove. The cross-sections of the movable groove and the movable block are both T-shaped, and the movable groove is open near the right side. When the movable block slides inside, it can slide out from the opening on the right side of the movable groove for replacement.

[0010] Preferably, the left inner wall of the movable groove is rotatably connected to a screw rod, and the outer surface thread of the screw rod penetrates the outer surface of the movable block. The screw rod thread penetrates the movable block, so the position of the movable block inside the movable groove can be adjusted by rotating the screw rod under the action of the thread.

[0011] Preferably, the right end of the adjusting rod is fixedly connected to the left end of the screw rod, so that the screw rod can be easily rotated by rotating the adjusting rod.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, during the coiling process of the spring raw material, the driving mechanism inside the processing disk body pushes the mounting seat forward, and at this time, the pitch stop rod pushes the end of the coiled spring raw material forward, and as the distance the pitch stop rod pushes forward changes, the pitch of the formed suspension spring changes. When the cold-rolled spring raw material is rubbed against each other during the process of the pitch stop rod pushing the cold-rolled spring raw material, the roller drives the pitch stop rod to passively rotate under the action of the bearing, thereby converting the sliding friction into rolling friction, so that suspension spiral spring workpieces with different pitches can be processed as needed, solving the problem of poor product quality caused by hard friction between conventional pitch tooling and raw materials.

[0014] 2. In the utility model, the adjusting rod is rotated by a hexagonal wrench to drive the screw rod to rotate, thereby driving the movable block to slide inside the movable groove. When the movable block moves, it plays a role in adjusting the distance between the pitch stop rod and the center of the processing disk body, so that it can be adapted to the processing of suspension springs of different diameters and models. The structure is simple and the practicality and versatility are high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a cold-rolled suspension helical spring pitch tooling is proposed for the utility model;

[0016] Figure 2 The utility model provides a schematic diagram of the mounting seat structure of a cold-rolled suspension helical spring pitch tooling;

[0017] Figure 3 The utility model provides a schematic diagram of the structure of an adjustment seat of a cold-rolled suspension helical spring pitch tooling;

[0018] Figure 4 The utility model provides a schematic diagram of the structure of a movable block of a cold-rolled suspension helical spring pitch tooling.

[0019] Legend: 1. Processing disc body; 2. Mounting seat; 21. Mounting slot; 22. Reserved slot; 3. Adjusting seat; 31. Movable slot; 32. Adjusting rod; 33. Screw rod; 4. Movable block; 41. First mounting shell; 42. Second mounting shell; 43. Bearing; 44. Roller; 45. Pitch stop rod; 46. Limiting ring. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] See also Figure 1-Figure 4 The utility model provides a technical solution: a cold-rolled suspension coil spring pitch tooling, including a processing disk body 1 and a movable block 4, the front surface of the movable block 4 is fixedly connected with a first mounting shell 41, the front surface of the first mounting shell 41 is fixedly installed with a second mounting shell 42, the inner surface walls of the first mounting shell 41 and the second mounting shell 42 are symmetrically fixedly connected with a limiting ring 46, the inner surface walls of the first mounting shell 41 and the second mounting shell 42 are provided with a roller 44, the outer surface of the roller 44 is symmetrically fixedly connected with a bearing 43, and one end of the roller 44 is fixedly connected with a pitch stop rod 45.

[0023] like Figure 4 As shown, the outer surfaces of the opposite sides of the two bearings 43 fit with the outer surfaces of the opposite sides of the two limit rings 46, and the outer surfaces of the two bearings 43 fit with the inner surfaces of the first mounting shell 41 and the second mounting shell 42. The two limit rings 46 are located between the two bearings 43, and after forming a resistance with the bearings 43, they play a role in limiting the internal position of the roller 44 in the first mounting shell 41 and the second mounting shell 42.

[0024] like Figure 1 and Figure 2As shown, a mounting seat 2 is provided on the front surface of the processing disk body 1 near the upper left corner, a mounting groove 21 is provided on the front surface of the mounting seat 2 near the right side, and a reserved groove 22 is provided on the front surface of the mounting seat 2 near the left side. The mounting seat 2 is connected to the driving mechanism inside the processing disk body 1 and can move forward and backward. The mounting groove 21 is mainly used for installing the adjustment seat 3, and the reserved groove 22 is mainly used for avoiding the end of the adjustment rod 32, and a U-shaped bracket is provided.

[0025] like Figure 1-Figure 3 As shown, an adjustment seat 3 is fixedly installed on the rear inner surface wall of the mounting groove 21, and an adjustment rod 32 is rotatably connected to the left end of the adjustment seat 3. The position of the outer surface of the adjustment rod 32 near the left end corresponds to the position of the reserved groove 22. A hexagonal groove is provided at the left end of the adjustment rod 32, and the adjustment rod 32 can be rotated with a hexagonal wrench.

[0026] like Figure 1-Figure 3 As shown, a movable groove 31 is provided on the front surface of the adjustment seat 3, and the movable block 4 is slidably embedded between the inner surface walls of the movable groove 31. The cross-sections of the movable groove 31 and the movable block 4 are both T-shaped, and the movable groove 31 is open near the right side. When the movable block 4 slides inside, it can slide out from the open right side of the movable groove 31 for replacement.

[0027] like Figure 2-Figure 4 As shown, the left inner wall of the movable groove 31 is rotatably connected with a screw rod 33, and the outer surface thread of the screw rod 33 penetrates the outer surface of the movable block 4. The screw rod 33 thread penetrates the movable block 4, so the position of the movable block 4 inside the movable groove 31 can be adjusted by rotating the screw rod 33 under the action of the thread.

[0028] like Figure 2-Figure 4 As shown, the right end of the adjusting rod 32 and the left end of the screw rod 33 are fixedly connected, and the screw rod 33 can be easily rotated by rotating the adjusting rod 32.

[0029] The usage and working principle of this device: A driving mechanism is arranged inside the processing disk body 1 to drive the mounting seat 2 to move forward and backward and to move other parts. The discharge piece on the left side of the processing disk body 1 is mainly used to output spring raw materials. When the spring raw materials pass through the first guide piece at the bottom, they will bend upward and bend again after passing through the second guide piece at the upper right corner. Finally, the spring raw materials will form a spiral suspension spring body. Finally, the cutting piece at the center moves forward, and the cutting piece at the top moves downward to cut off the formed suspension spring body. During the coiling process of the spring raw materials, the mounting seat 2 is pushed forward by the driving mechanism inside the processing disk body 1. At this time, the pitch stop rod 45 will push the end of the coiled spring raw materials forward. As the distance the pitch stop rod 45 is pushed forward changes, the formed When the pitch of the suspension spring changes and the pitch stop rod 45 pushes the cold-rolled spring raw material and friction occurs between the two, the roller 44 will drive the pitch stop rod 45 to passively rotate under the action of the bearing 43, and then convert the sliding friction into rolling friction, so that suspension helical spring workpieces with different pitches can be processed according to needs, which solves the problem of poor product quality caused by the hard friction between conventional pitch tooling and raw materials. At the same time, using a hexagonal wrench to rotate the adjusting rod 32 drives the screw rod 33 to rotate, which drives the movable block 4 to slide inside the movable groove 31. When the movable block 4 moves, it plays a role in adjusting the distance between the pitch stop rod 45 and the center of the processing disk body 1, so that it can be adapted to the processing of suspension springs of different diameters and models. It has a simple structure and high practicality and versatility.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A cold-rolled suspension coil spring pitch tooling, comprising a processing disc body (1) and a movable block (4), characterized in that: The front surface of the movable block (4) is fixedly connected to a first mounting shell (41), the front surface of the first mounting shell (41) is fixedly mounted to a second mounting shell (42), a limiting ring (46) is symmetrically fixedly connected between the inner surface walls of the first mounting shell (41) and the second mounting shell (42), a roller (44) is provided between the inner surface walls of the first mounting shell (41) and the second mounting shell (42), the outer surface of the roller (44) is symmetrically fixedly connected to a bearing (43), and one end of the roller (44) is fixedly connected to a pitch stop rod (45).

2. A cold-rolled suspension coil spring pitch tooling according to claim 1, characterized in that: The outer surfaces of the two bearings (43) on opposite sides are fitted with the outer surfaces of the two limiting rings (46) on opposite sides, and the outer surfaces of the two bearings (43) are fitted with the inner surface walls of the first mounting shell (41) and the second mounting shell (42).

3. A cold-rolled suspension coil spring pitch tooling according to claim 2, characterized in that: A mounting seat (2) is provided on the front surface of the processing disc body (1) near the upper left corner, a mounting groove (21) is provided on the front surface of the mounting seat (2) near the right side, and a reserved groove (22) is provided on the front surface of the mounting seat (2) near the left side.

4. A cold-rolled suspension coil spring pitch tooling according to claim 3, characterized in that: An adjustment seat (3) is fixedly mounted on the rear inner surface wall of the mounting groove (21); an adjustment rod (32) is rotatably connected to the left end of the adjustment seat (3); and a position of the outer surface of the adjustment rod (32) close to the left end corresponds to the position of the reserved groove (22).

5. The cold-rolled suspension coil spring pitch tooling according to claim 4, characterized in that: The front surface of the adjustment seat (3) is provided with a movable groove (31), and the movable block (4) is slidably embedded between the inner surface walls of the movable groove (31).

6. A cold-rolled suspension coil spring pitch tooling according to claim 5, characterized in that: The left inner surface wall of the movable groove (31) is rotatably connected to a screw rod (33), and the outer surface of the screw rod (33) is threadedly penetrated through the outer surface of the movable block (4).

7. The cold-rolled suspension coil spring pitch tooling according to claim 6, characterized in that: The right end of the adjusting rod (32) and the left end of the screw rod (33) are fixedly connected.

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