Synchronous pulley cold heading die

Abstract

The utility model provides a synchronous pulley cold heading die which comprises an upper die, a lower die and a material guiding table, the lower die is arranged below the upper die, a swing arm located on one side of the material guiding table is arranged between the upper die and the lower die, material guiding wheels are connected to the two upper sides of the material guiding table in a rotating mode, and a sliding cavity located below the material guiding wheels is formed in the material guiding table. In the using process of a cold heading die in the prior art, when workpieces with different outer diameters are clamped inside for conveying and machining, a clamping mechanism of the workpieces needs to be adjusted again, in this way, a large amount of time is wasted, materials above a material guide table in the conveying process can be clamped between material guide wheels, and the machining efficiency is greatly improved. According to the material guiding device, the material guiding table is arranged on the upper die, materials are not prone to shifting on the material guiding table during machining, when workpieces with different outer diameters are punched by the upper die above the material guiding table, the material guiding wheel can be pushed to clamp the materials above the material guiding table, then the materials with different outer diameters can be clamped and fixed, manual adjustment is not needed, time and labor are saved, and practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cold heading dies, in particular to a cold heading die for a synchronous pulley. Background Technique

[0002] A die is various molds and tools used in industrial production to obtain required products by methods such as injection molding, blow molding, extrusion, die casting, or forging, smelting, stamping, etc. A cold heading machine is a special equipment mainly used for batch production of fasteners such as nuts and bolts by heading.

[0003] In the prior art: The Chinese utility model patent of CN205996085U relates to a cold heading machine, including a die, a base, a plurality of baffles arranged on the base, and a cold heading mechanism. The connection between the lower end of the baffle and the base is a closed structure. The baffle and the base together form a cavity. The cold heading mechanism is arranged in the cavity. The cold heading mechanism includes a power device, a connecting rod, a punch, and a die. The power device drives the punch and the groove to move through the connecting rod. In the utility model, compared with the traditional cold heading machine, the utility model adds a baffle. Since the connection between the lower end of the baffle and the base is a closed structure, when the cold heading machine is working and vibrating, substances such as lubricating oil will be blocked by the baffle and will not directly drip below the base but directly drip on the base. Therefore, only the lubricating oil and other substances on the base need to be cleaned regularly. It will not affect the working environment, and the lubricating oil on the base is easy to clean. The plastic deformation or separation of the blank of the processed part is caused by the punch and the die, so that fasteners can be manufactured.

[0004] However, during the use of this cold heading die, when clamping workpieces with different outer diameters for conveying and processing, the clamping mechanism of the workpiece needs to be adjusted again, which wastes a lot of time. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides a cold heading die for a synchronous pulley to solve the problem that during the use of the cold heading die in the prior art, when clamping workpieces with different outer diameters for conveying and processing, the clamping mechanism of the workpiece needs to be adjusted again, which wastes a lot of time.

[0006] The purpose and effect of a cold heading die for a synchronous pulley of the utility model are achieved by the following specific technical means: A cold heading die for a synchronous pulley includes an upper die, a lower die, and a feeding table. The lower die is arranged below the upper die. The feeding table is fixedly connected to the bottom of the lower die. A synchronous pulley mechanism is fixedly connected to one side of the lower die. A swing arm is arranged between the upper die and the lower die on one side of the feeding table. Guide wheels are rotatably connected to both sides of the upper part of the feeding table. A sliding cavity is opened inside the feeding table below the guide wheels.

[0007] Preferably, the swing arm is arranged in multiple sections spliced together, and the connection parts of the swing arm with the upper die and the lower die are rotatably connected.

[0008] Preferably, a ejector rod located on the side of the material guiding table is fixedly connected to the bottom side of the swing arm, and the ejector rod is arranged in an L shape.

[0009] Preferably, a plurality of material guiding wheels are arranged in sequence, and a push plate corresponding to the material guiding wheels is slidably connected inside the sliding cavity.

[0010] Preferably, the bottom end of the material guiding wheel penetrates into the sliding cavity and is fixedly connected to the top end of the push plate.

[0011] Preferably, insertion holes located above the sliding cavity are formed on both sides above the material guiding table, and insertion plates corresponding to the insertion holes are fixedly connected to both sides of the bottom of the upper die.

[0012] Preferably, the insertion plates and the insertion holes are snap-fitted, and the side surfaces of the insertion plates are inclined.

[0013] Preferably, the side surface of the push plate is inclined corresponding to the insertion plate, and a pressure spring located inside the sliding cavity is fixedly connected to the other side of the push plate.

[0014] Beneficial effects:

[0015] 1. During the downward movement of the upper die, the insertion plates fixedly connected to both sides of the bottom will be driven to move together. The bottom end of the insertion plate will penetrate into the sliding cavity formed inside the material guiding table, and the side surfaces of the push plate corresponding to the side surfaces of the insertion plates are both inclined. Thus, when the insertion plate slides downward, it will also push the push plate laterally inside the sliding cavity. When the push plate slides to one side inside the sliding cavity, it will drive the material guiding wheels fixedly connected above to move together. As a result, the material being transported above the material guiding table will be clamped between the material guiding wheels, making it difficult for the material to shift on the material guiding table during processing. Moreover, when workpieces with different outer diameters are being stamped and processed above the material guiding table by the upper die, the material guiding wheels will be pushed to clamp the material above the material guiding table, enabling clamping and fixing of materials with different outer diameters without manual adjustment, saving time and effort and improving practicality.

[0016] 2. During the process of the processed material being pushed out for discharging, when the upper die presses downward to continuously process the material behind, the upper die will push the swing arm rotatably connected to its sidewall downward. The swing arm is connected by multiple sections in a rotational manner. When the swing arm is pushed downward, the lower end of the swing arm will rotate on the sidewall of the lower die. Thus, the swing arm will contract. During the contraction of the lower section of the swing arm, it will push the ejector rod fixedly connected to the other side upward. As a result, the L-shaped ejector rod will rotate under the material, enabling the processed material to be pushed out from above the waste material, preventing the material from remaining on top of the waste material and making the demolding of the material more efficient. Description of the Drawings

[0017] Figure 1 This is a schematic diagram of the overall structure of the present utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the material guiding table in the present utility model.

[0019] Figure 3 This is a schematic diagram of the sectional structure of the material guiding table in the present utility model.

[0020] Figure 4 This is a schematic diagram of the structure of the push plate in the present utility model.

[0021] Figure 5 In the present utility model Figure 1 Schematic diagram of the enlarged structure at position A.

[0022] Figures 1-5 In [it], the corresponding relationship between the part names and the drawing numbers is as follows:

[0023] Upper die - 1, lower die - 2, synchronous belt wheel mechanism - 201, swing arm - 202, ejector rod - 203, material guiding table - 3, jack - 301, sliding cavity - 302, material guiding wheel - 4, push plate - 401, pressure spring - 402, inserting plate - 403. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment

[0025] As shown in the attached Figure 1 to the attached Figure 5 figures:

[0026] A synchronous belt wheel cold forging die includes an upper die 1, a lower die 2, and a material guiding table 3. The lower die 2 is installed below the upper die 1, and the material guiding table 3 is fixedly connected above the lower die 2. The upper die 1 can be pushed up and down by a corresponding pressing cylinder, so that the material installed above the material guiding table 3 can be processed and formed.

[0027] It should be understood that the above - mentioned fixed connection means that there is no relative movement between the two. There are various ways of fixed connection. Here, the bolt method can be used for fixation, making it more convenient for disassembling, assembling, and maintaining the material guiding table 3 later.

[0028] During the processing of the material installed on the feeding table 3, the synchronous pulley mechanism 201 fixedly installed at the front end of the lower die 2 will convey the material. As a result, during the processing of the material, the material will be continuously conveyed and processed. When the material is conveyed above the feeding table 3, the guiding wheels 4 rotatably connected above the feeding table 3 will clamp the material therebetween, making the material conveyance process smoother. After the material is processed and pushed out during the discharging process, when the upper die 1 presses down, it will continuously process the material at the rear. As a result, the upper die 1 will push the swing arm 202 rotatably connected to its side wall downward. Since the swing arm 202 is rotatably connected in multiple sections, when the swing arm 202 is pushed downward, one end of the lower part of the swing arm 202 will rotate on the side wall of the lower die 2, causing the swing arm 202 to contract. During the contraction of one section of the lower part of the swing arm 202, it will push the ejector rod 203 fixedly connected to the other side upward. As a result, the L-shaped ejector rod 203 will rotate under the material, enabling the processed material to be pushed out from above the waste material, preventing the material from remaining above the waste material and making the demolding of the material more efficient.

[0029] When the upper die 1 processes the material above the feeding table 3, during the downward movement of the upper die 1, it will drive the insertion plates 403 fixedly connected to both sides of the bottom to move together, causing the insertion plates 403 to insert into the insertion holes 301 opened on both sides above the feeding table 3. When the upper die 1 continuously pushes the insertion plates 403 to move, the bottom end of the insertion plates 403 will penetrate into the sliding cavity 302 opened inside the feeding table 3. The side surface of the insertion plates 403 is inclined. As a result, after the insertion plates 403 are inserted into the sliding cavity 302, the side surface of the insertion plates 403 will abut against the side surface of the push plate 401 slidably connected inside the sliding cavity 302. The side surface of the push plate 401 is inclined corresponding to the side surface of the insertion plates 403. As a result, the side surface of the insertion plates 403 will abut against the side surface of the push plate 401 and slide downward. When the insertion plates 403 slide downward, they will also push the push plate 401 laterally in the sliding cavity 302. When the push plate 401 slides laterally in the sliding cavity 302, it will drive the guiding wheels 4 fixedly connected above it to move together. As a result, the material being conveyed above the feeding table 3 will be clamped between the guiding wheels 4. When the upper die 1 stamping processes the material above the feeding table 3, the material is not likely to shift on the feeding table 3. When workpieces with different outer diameters are stamped by the upper die 1 above the feeding table 3, the guiding wheels 4 will be pushed to clamp the material above the feeding table 3, enabling the clamping and fixing of materials with different outer diameters without manual adjustment, saving time and effort, improving practicality. After the upper die 1 processes the workpiece and rises, it will pull out the insertion plates 403 from the insertion holes 301, causing the compression spring 402 fixedly connected to the inner wall of the sliding cavity 302 to rebound and push the push plate 401 back to its original position. As a result, the push plate 401 will drive the guiding wheels 4 to move away from both sides of the material, preventing problems such as material jamming during the continuous conveyance of the material through the synchronous pulley mechanism 201 and improving the processing efficiency of the material.

[0030] Working principle: During the processing of installing the material on the material guiding table 3, the synchronous pulley mechanism 201 at the front end of the lower die 2 will convey the material. When the material is being transported above the material guiding table 3, it will slide along the side of the material guiding wheel 4. When the upper die 1 presses down to process the material, during the descent of the upper die 1, the insertion plates 403 on both sides of the bottom will be driven to move together, so that the insertion plates 403 will be inserted into the insertion holes 301 above the material guiding table 3, and the bottom ends of the insertion plates 403 will penetrate into the sliding cavity 302 inside the material guiding table 3. After the insertion plates 403 are inserted into the sliding cavity 302, the sides of the insertion plates 403 will abut against the sides of the push plates 401 and slide downwards. When the insertion plates 403 slide downwards, they will also push the push plates 401 laterally in the sliding cavity 302. When the push plates 401 slide towards one side in the sliding cavity 302, they will drive the material guiding wheels 4 above to move together. As a result, the material being transported above the material guiding table 3 will be clamped between the material guiding wheels 4. When the upper die 1 punches the material above the material guiding table 3, the material will be limited above the material guiding table 3, and materials with different outer diameters can also be clamped and fixed. When the upper die 1 finishes processing the workpiece and rises, it will pull out the insertion plates 403 from the insertion holes 301, so that the compression springs 402 on the inner wall of the sliding cavity 302 will rebound to push the push plates 401 back to their original positions. As a result, the push plates 401 will drive the material guiding wheels 4 to move away from both sides of the material, so that the material will not have problems such as jamming during the continuous transmission through the synchronous pulley mechanism 201. During the continuous up and down movement of the upper die 1 to process the material, when the upper die 1 descends, it will also push the swing arms 202 on the side walls downwards. When the swing arms 202 are pushed downwards, the lower ends of the swing arms 202 will rotate on the side walls of the lower die 2. As a result, the swing arms 202 will contract. During the contraction of the lower section of the swing arms 202, they will push the ejector rods 203 on the other side upwards. As a result, the ejector rods 203 will rotate under the material and push the processed material out from above the waste material, so that the material will not remain above the waste material, making the demolding of the material more efficient.

Claims

1. A cold heading die for a synchronous pulley, comprising an upper die (1), a lower die (2) and a material guiding table (3), wherein the lower die (2) is arranged below the upper die (1), and the material guiding table (3) is fixedly connected to the bottom of the lower die (2), and is characterized in that: One side of the lower die (2) is fixedly connected with a synchronous pulley mechanism (201). A swing arm (202) is arranged between the upper die (1) and the lower die (2) and is located on one side of the material guiding table (3). The two sides of the upper part of the material guiding table (3) are rotatably connected with material guiding wheels (4). A sliding cavity (302) is formed inside the material guiding table (3) and is located below the material guiding wheels (4).

2. The cold heading die for synchronous belt pulley according to claim 1, wherein: The swing arm (202) is arranged in a multi-section splicing manner, and the connection parts of the swing arm (202) with the upper die (1) and the lower die (2) are rotatably connected.

3. The cold forging die for synchronous pulley according to claim 2, wherein: A ejector rod (203) located on the side of the material guiding table (3) is fixedly connected to the bottom side of the swing arm (202), and the ejector rod (203) is arranged in an L shape.

4. The cold heading die for synchronous pulley according to claim 1, wherein: The material guiding wheels (4) are arranged in sequence. A push plate (401) corresponding to the material guiding wheels (4) is slidably connected inside the sliding cavity (302).

5. The cold heading die for synchronous belt pulley according to claim 4, wherein: The bottom end of the material guiding wheel (4) penetrates into the sliding cavity (302) and is fixedly connected to the top end of the push plate (401).

6. The cold heading die for synchronous belt pulley according to claim 1, wherein: Insertion holes (301) are formed in the two sides above the material guiding table (3) and are located above the sliding cavity (302). Insertion plates (403) corresponding to the insertion holes (301) are fixedly connected to the two sides of the bottom of the upper die (1).

7. The cold heading die for synchronous belt pulley according to claim 6, wherein: The insertion plates (403) are clamped with the insertion holes (301), and the side surfaces of the insertion plates (403) are inclined.

8. The cold heading die for synchronous belt pulley according to claim 4, wherein: The side surface of the push plate (401) is inclined corresponding to the insertion plate (403), and the other side of the push plate (401) is fixedly connected with a pressure spring (402) located inside the sliding cavity (302).

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