Multi-station automatic feeding nut cold header

Abstract

This utility model proposes a multi-station automatic feeding nut cold heading machine, including a machine base, a processing table, a feeding block, an extrusion block, and an unloading block. The processing table is located in the middle of the machine base, and multiple through holes are provided on one side of the processing table. The feeding block is located on the top surface of the processing table, and the die sleeve passes through the through holes. The extrusion block is located on one side of the machine base, and multiple stamping cutters are provided on one side of the extrusion block, while a telescopic rod is provided on the other side. Multiple guide rods are provided on the bottom surface of the extrusion block, and one end of the telescopic rod passes through the drive device. The unloading block is located on the other side of the machine base, and multiple push rods are provided on one side of the unloading block. Multiple gear rods are provided on the bottom surface of the unloading block, and the gear rods engage with the teeth provided on the guide rods. The beneficial effects of this utility model are: its structural design is simple and reasonable, with a further improved structure, and it reduces the need for hydraulic cylinders to bear the impact forming pressure.

Description

Technical Field

[0001] This utility model belongs to the technical field of cabinet air conditioner housings, and specifically relates to a multi-station automatic feeding nut cold heading machine. Background Technology

[0002] Currently, cold heading machines are specialized equipment that utilize the principle of metal plastic deformation to extrude, upset, and stamp metal wires through molds at room temperature to manufacture fasteners (such as bolts, nuts, screws, rivets, etc.) or other metal parts. Due to their high efficiency, material saving, and high strength, they are widely used in fastener, automotive, electronics, construction and other industries.

[0003] Among them, the nut cold heading machine is a cold forming equipment specially used to produce nuts. It efficiently manufactures standard or non-standard nuts through the cold heading process (plastic deformation of metal at room temperature).

[0004] To address this issue, Chinese Patent No. 2024214389067 proposes a multi-station automatic nut cold heading machine. The machine processes raw materials into flat cylindrical blocks using a nut raw material processing device, then rolls these blocks onto a conveyor belt on the upper end of a mounting bracket. The conveyor belt transports the blocks to the upper end of a guide trough, where they roll into an inclined groove inside the guide trough 203. During this rolling process, the blocks fall sequentially into a through groove, filling it completely. The material continues to accumulate in the inclined groove, where it is stamped in a forming chamber using an extrusion block and a stamping cutter. Then, a first hydraulic cylinder is activated to extend and retract a first push rod, which in turn pushes multiple limiting shafts through a connecting groove to limit the stamping of the nut raw material. After forming, the nut is pushed out of the forming chamber and discharged into a discharge trough. The entire loading and unloading process is automated, eliminating the need for multiple feeding mechanisms. This single mechanism can handle both feeding and unloading of the formed nuts during multi-station processing, reducing production and subsequent maintenance costs. Furthermore, it is easy for operators to use, reducing their workload.

[0005] However, for the above structure, the first hydraulic cylinder extends and retracts the first push rod, which in turn pushes the push plate to push multiple limit shafts through the connecting groove to limit the nut material being stamped. This results in the cold heading machine impact forming pressure, and the first hydraulic cylinder is used to bear the impact forming pressure, which leads to a short service life of the first hydraulic cylinder. Utility Model Content

[0006] This utility model proposes a multi-station automatic feeding nut cold heading machine. The cold heading machine includes a base, a processing table, a feeding block, an extrusion block, and a unloading block. The processing table is located in the middle of the base, and a mold sleeve is located inside the processing table. The feeding block is located on the upper part of the processing table. However, the mold sleeve and the feeding block are connected on one side, which helps to form an automatic feeding structure. An extrusion block is located on one side of the base, and an unloading block is located on the other side. The extrusion block and the unloading block are in a facing position, and the processing table is located between the extrusion block and the unloading block. One side of the pressurization module is connected to the drive device, and a guide rod is located at the bottom. The guide rod is connected to the gear on the unloading block by teeth. When the extrusion block moves forward, it causes the unloading block to move backward, which helps to carry out the processing and unloading steps. This multi-station automatic feeding nut cold heading machine has a further improved structure, reduces the use of hydraulic cylinders to bear the impact forming pressure structure, and solves the problems mentioned in the background technology.

[0007] The technical solution of this utility model is implemented as follows: The cold heading machine includes:

[0008] Machine base, wherein a processing table is provided in the middle of the machine base;

[0009] The machine base has a discharge port on one side and multiple grooves on the other side;

[0010] The processing table has multiple through holes on one side and multiple feed ports on the other side;

[0011] The processing table is adjacent to the discharge port;

[0012] Preferably, the groove is a structure that extends through the bottom of the processing table;

[0013] Preferably, a protective sleeve is provided on the upper part of the discharge port;

[0014] A loading block, wherein the loading block is disposed on the top surface of the processing table;

[0015] The top of the feeding block is provided with a feeding chute, and a transmission belt is provided on one side;

[0016] The feeding block is equipped with a feeding channel inside;

[0017] The transmission belt is located on one side of the feed chute and is in an adjacent configuration;

[0018] Preferably, the bottom surface of the feed trough is inclined, and the port of the feed channel is located on the inclined bottom surface of the feed trough;

[0019] Preferably, one end of the feed channel communicates with the inside of the feed trough, and the other end communicates with the inside of the feed inlet;

[0020] A mold sleeve, which is inserted into a through hole, includes a die, a limiting rod, and an elastic block;

[0021] The die has a notch on one side;

[0022] One end of the die is provided with a fixing plate, and the other end of the die is provided with a limiting rod.

[0023] A positioning block is provided on one side of the limiting rod;

[0024] The elastic block is provided with a first block and a second block respectively;

[0025] The first piece is inserted between the end of the die and the positioning block, and the second piece is inserted between the inner wall of the processing table and the positioning block.

[0026] Preferably, the notch is shaped to be opposite to the end of the feed channel;

[0027] Preferably, the fixing plate is connected to the processing table by bolts;

[0028] Preferably, the elastic block has a spring structure;

[0029] An extrusion block, wherein the extrusion block is disposed on one side of the machine base;

[0030] A first sliding plate is provided on one side of the extrusion block;

[0031] The extrusion block is provided with multiple stamping cutters on one side and a telescopic rod on the other side;

[0032] The bottom surface of the extrusion block is provided with multiple guide rods;

[0033] The guide rod is inserted into the groove and the protective sleeve;

[0034] The guide rod has multiple protruding teeth at one end;

[0035] Preferably, the first sliding plate passes through a first sliding groove provided on one side of the base;

[0036] Preferably, the stamping cutter head and the through hole are in a facing configuration;

[0037] Preferably, one end of the telescopic rod passes through the drive device;

[0038] A discharge block is located on the other side of the machine base;

[0039] A second sliding plate is provided on one side of the unloading block;

[0040] The unloading block is provided with multiple push rods on one side;

[0041] The bottom surface of the unloading block is provided with multiple gear rods;

[0042] The gear rod is connected to the guide rod by teeth;

[0043] Preferably, the second sliding plate passes through a second sliding groove provided on one side of the machine base;

[0044] Preferably, the push rod and the through hole are in a facing configuration;

[0045] A support frame is provided between the unloading block and the processing table;

[0046] The support frame has multiple positioning holes on one side;

[0047] The frame with a push rod passing through the positioning hole;

[0048] Preferably, the center of the positioning hole is opposite to the center of the through hole and the center of the push rod.

[0049] After adopting the above technical solution, the beneficial effects of this utility model are: its structural design is simple and reasonable, with a further improved structure, which reduces the use of hydraulic cylinders to bear the impact forming pressure; the cold heading machine includes a base, a processing table, a feeding block, an extrusion block and a discharge block. The processing table is provided in the middle of the base, the extrusion block and the discharge block are located on one side of the base, and the processing table is located between the extrusion block and the discharge block. One side of the extrusion block is provided with a stamping cutter head, and the other side is connected to the drive device. One side of the discharge block is provided with a push rod. The stamping cutter head and the push rod can be inserted into the mold sleeve provided in the processing table to perform processing and discharge. The bottom surface of the extrusion block is provided with a guide rod, and one side of the guide rod is provided with multiple teeth. The guide rod is connected to the gear rod provided on the bottom surface of the discharge block by the teeth. The back and forth movement of the extrusion block helps the discharge block to move back and forth as well, realizing a one-in-one-out structure, thus reducing the use of hydraulic cylinders to bear the impact forming pressure. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a schematic diagram of the overall structure of the cold heading machine of this utility model.

[0052] Figure 2 This is an exploded view of the overall structure of the cold heading machine of this utility model.

[0053] Figure 3 This is a schematic diagram of the overall structure of the unloading block of this utility model.

[0054] Figure 4 This is a schematic diagram of the overall structure of the base of this utility model.

[0055] Figure 5 This is a schematic diagram of the overall structure of the mold of this utility model.

[0056] Figure 6 This is a cross-sectional view of the overall structure of the feeding block of this utility model. Detailed Implementation

[0057] 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.

[0058] Example 1:

[0059] like Figures 1-2 As shown: The cold heading machine includes a base 2, a processing table 20, a feeding block 3, an extrusion block 5, and an unloading block 7. The processing table 20 is located in the middle of the base 2. The extrusion block 5 and the unloading block 7 are located on one side of the base 2, and the processing table 20 is located between the extrusion block 5 and the unloading block 7. One side of the extrusion block 5 is provided with a punching head 51, and the other side is connected to the drive device 520. One side of the unloading block 7 is provided with a push rod 70. The punching head 51 and the push rod 70 can be inserted into the mold sleeve provided in the processing table 20 to perform processing and unloading. The bottom surface of the extrusion block 5 is provided with a guide rod 53. One side of the guide rod 53 is provided with multiple teeth. The guide rod 53 is connected to the gear rod 71 provided on the bottom surface of the unloading block 7 by the teeth. The back-and-forth movement of the extrusion block 5 helps the unloading block 7 to also move back and forth, realizing a one-in-one-out structure, thereby reducing the need for a hydraulic cylinder to bear the impact forming pressure.

[0060] like Figure 2 As shown: the extrusion block 5 is located on one side of the machine base 2, and a first slide plate 50 is provided on one side of the extrusion block 5. The first slide plate 50 passes through a first slide groove 6 provided on one side of the machine base 2. The first slide groove 6 provides a fixed path for the movement of the first slide plate 50, ensuring that the slide plate moves in a specific direction, avoiding deviation or shaking, and helping to improve the stability and accuracy of the movement.

[0061] The extrusion block 5 has multiple stamping heads 51 on one side, and the stamping heads 51 are opposite to the through holes 200. The through holes 200 are located on one side of the processing table 20 and there are multiple of them. The other side of the extrusion block 5 has a telescopic rod 52. One end of the telescopic rod 52 is inserted into the drive device 520 (motor, cylinder, hydraulic cylinder). The extrusion block 5 moves back and forth through the telescopic movement of the telescopic rod 52.

[0062] The bottom surface of the extrusion block 5 is provided with multiple guide rods 53, and one end of each guide rod 53 is provided with multiple protruding teeth.

[0063] like Figure 3 As shown: The unloading block 7 is located on the other side of the machine base 2. A second sliding plate 72 is provided on one side of the unloading block 7. The second sliding plate 72 passes through the second sliding groove 60 provided on one side of the machine base 2. The assembly structure of the second sliding plate 72 and the second sliding groove 60 is the same as the assembly structure of the first sliding groove 6 and the first sliding plate 50.

[0064] The unloading block 7 has multiple push rods 70 on one side, and the push rods 70 and the through hole 200 are in a facing shape;

[0065] The bottom surface of the unloading block 7 is provided with multiple gear rods 71. The gear rods 71 ​​are connected with the teeth of the guide rod 53. When the extrusion block 5 moves back and forth, the unloading block 7 moves back and forth at the same time. It should be noted that the direction of the extrusion block 5's back and forth movement is opposite to the direction of the unloading block 7's back and forth movement. However, the connection between the extrusion block 5, the unloading block 7 and the through hole 200 forms an in-and-out configuration, which helps the extrusion block 5 to perform the processing steps and the unloading block 7 to perform the unloading steps.

[0066] like Figure 5 As shown: the die sleeve passes through the through hole 200, however, the center of the die sleeve is opposite to the center of the stamping cutter head 51 and the push rod 70;

[0067] The mold sleeve includes a die 4, a limiting rod 40 and an elastic block; a notch 45 is provided on one side of the die 4, and the notch 45 and the end of the feed channel 32 are opposite to each other. The feed channel 32 is located inside the loading block 3, which helps the workpiece to be processed to be automatically added into the die 4.

[0068] The die 4 has a fixing plate 41 at one end, which is connected to the processing table 20 by bolts, which helps to improve the stability of the die sleeve installation.

[0069] The other end of the die 4 is provided with a limiting rod 40, and a positioning block 400 is provided on one side of the limiting rod 40.

[0070] The elastic blocks are respectively provided with a first block 42 and a second block 43; the first block 42 is inserted between the end of the die 4 and the positioning block 400, and the second block 43 is inserted between the inner wall of the processing table 20 and the positioning block 400. Preferably, the elastic block is a spring structure. However, the limiting rod 40 can move through the elastic block and the elasticity of the elastic block helps the limiting rod 40 to automatically reset.

[0071] It should be noted that when the stamping head 51 is driven by the drive device 520, the stamping head 51 performs the impact processing step, while the workpiece to be processed in the die 4 is cold-forged. The workpiece is supported by the limiting rod 40, and the first piece 42 and the second piece 43 (spring) can absorb the impact force between the die and the workpiece during the cold forging process, which helps to reduce the vibration of the equipment and protect the structure of the die. When the push rod 70 contacts the limiting rod 40, the limiting rod 40 is supported by the first piece 42, and the limiting rod 40 performs the unloading (pushing out) step of the cold-forged workpiece through the extension and retraction movement.

[0072] like Figure 1 , Figure 6 As shown: The loading block 3 is located on the top surface of the processing table 20; the top of the loading block 3 is provided with a feeding groove 30 and the inside is provided with a feeding channel 32, and one end of the feeding channel 32 is connected to the inside of the feeding groove 30, and the other end is connected to the inside of the feeding port 201; the feeding port 201 is located on the top surface of the processing table 20, and there are multiple feeding ports, and the feeding port 201 and the notch 45 are in a vertically opposite shape. However, the notch 45 and the end of the feeding channel 32 are in a opposite shape, which helps the processing table 20 to achieve an automatic feeding structure through the loading block 3;

[0073] A transmission belt 31 is provided on one side of the material block 3, and the transmission belt 31 is located in the feed trough 30. However, the transmission belt 31 and the feed trough 30 form an adjacent form, and the transmission belt 31 helps to transport the workpiece to be processed into the feed trough 30.

[0074] It should be noted that the feed channel 32 is vertical. The workpiece to be processed slides into the feed channel 32 through the feed groove 30. Multiple workpieces to be processed can be stacked in the feed channel 32 from bottom to top. Based on the above structure, the steps are as follows: after the extrusion block 5 is processed, the back and forth movement of the extrusion block 5 drives the back and forth movement of the unloading block 7. The unloading block 7 uses the push rod to push the limiting rod 4 to extend and retract. The limiting rod 4 unloads the processed workpiece. When the limiting rod 4 automatically resets due to the elasticity of the elastic block, after the limiting rod 4 passes the notch 45, the workpiece to be processed above the notch 45 will slide into the cavity 4.

[0075] When the extrusion block 5 is being processed, the stamping head 51 will prevent the workpiece to be processed above the notch 45 from sliding into the die 4. At the same time, when the extrusion block 5 moves backward, the automatic reset of the limit rod 4 will push the processed workpiece to fill the position of the notch 45, thus preventing the workpiece to be processed above from sliding into the die 4.

[0076] The machine base 2 has a processing table 20 in the middle, such as Figure 1As shown, the processing table 20 is located between the extrusion block 5 and the unloading block 7; the machine base 2 has an outlet 21 on one side, and the processing table 20 is adjacent to the outlet 21. However, after the unloading block 7 pushes out the processed workpiece in the mold, the processed workpiece will fall to the position of the outlet 21. A box and a transmission belt can be provided below the outlet 21 to help collect and transport the processed workpiece for the next processing step.

[0077] Example 2:

[0078] like Figure 4 As shown: On the other side (one side) of the machine base 2, there are multiple grooves 22. The grooves 22 are structures that penetrate the bottom of the processing table 20, and the guide rod 53 is inserted into the groove 22, which helps the extrusion block 5 and the unloading block 7 to form a connected structure. However, during processing, the processing steps of one in and one out are realized.

[0079] Example 3:

[0080] like Figure 4 As shown: A protective sleeve 210 is provided on the upper part of the discharge port 21, and the guide rod 53 is inserted inside the protective sleeve 210 to help prevent the processed workpiece from hitting the guide rod 53 during unloading.

[0081] Example 4:

[0082] like Figure 6 As shown: The bottom surface of the feed trough 30 is inclined, and the port of the feed channel 32 is located on the inclined bottom surface of the feed trough 30. However, with the same inclination angle, the workpieces to be processed in the feed trough 30 slide down into the feed channels 32 arranged from left to right.

[0083] Example 5:

[0084] like Figures 1-2 As shown: The support frame 8 is located between the unloading block 7 and the processing table 20. The support frame 8 is connected to the frame of the machine base 2 by bolts. However, the support frame 8 forms a fixed shape, and multiple positioning holes 80 are provided on one side of the support frame 8. The frame of the push rod 70 passes through the positioning holes 80. The positioning holes 80 provide a fixed path for the movement of the push rod 70, ensuring that the push rod 70 moves in a specific direction, avoiding deviation or shaking, and helping to improve the stability and accuracy of the movement.

[0085] Preferably, the center of the positioning hole 80 is opposite to the center of the push rod 70 of the through hole 200, which helps the push rod 70 to pass through the through hole 200 through the back and forth movement of the unloading block 7.

[0086] Briefly describe the working principle;

[0087] This utility model proposes a multi-station automatic feeding nut cold heading machine. The cold heading machine includes a base 2, a processing table 20, a feeding block 3, an extrusion block 5, and an unloading block 7. The processing table 20 is located in the middle of the base 2, and the feeding block 3 is located on the top of the processing table 20. A feeding groove 30 is provided on one side of the feeding block 30, and a transmission belt 31 is provided on one side of the feeding groove 30. The feeding channel 32 provided in the feeding block 3 communicates with the feeding groove 30 and the interior of the die sleeve. However, the workpiece to be processed can slide down through the feeding groove 30 to the die sleeve. The internal machining of the mold sleeve enables an automatic feeding structure. The mold sleeve includes a cavity mold 4, a limiting rod 40, and elastic blocks. One end of the limiting rod 40 passes through the cavity mold 4, and a positioning block 400 is provided on one side of the limiting rod 40. The elastic blocks are respectively provided with a first block 42 and a second block 43. The first block 42 is located between the positioning block 400 and the cavity mold 4, and the second block 43 is located between the positioning block 400 and the inner wall of the processing table 20. However, the limiting block passes through the first block 42, and the second block 43 has the function of forming... The telescopic movement helps the mold sleeve withstand the pressure reduction of impact; the machine base 2 is provided with an extrusion block 5 on one side, the extrusion block 5 is provided with a stamping cutter head 51 on one side, and the other side is connected to the drive device 520. Then the extrusion block 5 can move back and forth, and the stamping cutter head 51 is opposite to the center of the mold sleeve, which helps the extrusion block 5 to perform the processing steps; the unloading block 7 is provided with a push rod 70 on one side and a gear rod 71 on the bottom surface. The gear rod 71 is connected to the teeth of the guide rod 53. One end of the guide rod 53 is located on the bottom surface of the extrusion block 5. When the extrusion block 5 moves back and forth, it helps the unloading block 7 to move back and forth. The back and forth movement of the unloading block 7 helps the push rod 70 to pass through the inside of the mold sleeve to realize the unloading structure; through the above structure, both the extrusion block 5 and the unloading block 7 can move back and forth. It is an in-and-out structure. The movement of the extrusion block 5 realizes the movement of the unloading block 7. It has the advantages of reducing the use of hydraulic cylinders to withstand the impact forming pressure structure and achieving a further improved structure.

[0088] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-station automatic feeding nut cold heading machine, characterized in that: include: A machine base, wherein a processing table is provided in the middle of the machine base, and a plurality of through holes are provided on one side of the processing table; A loading block, wherein the loading block is disposed on the top surface of the processing table; A mold sleeve, wherein the mold sleeve is inserted into the through hole; An extrusion block is located on one side of the machine base. One side of the extrusion block is provided with multiple stamping cutters, and the other side is provided with a telescopic rod. The bottom surface of the extrusion block is provided with multiple guide rods; One end of the telescopic rod passes through the drive device; A discharge block is located on the other side of the machine base; The unloading block is provided with multiple push rods on one side; The bottom surface of the unloading block is provided with multiple gear rods; The gear rod is connected to the guide rod by teeth.

2. The multi-station automatic feeding nut cold heading machine as described in claim 1, characterized in that: The extrusion block is provided with a first sliding plate on one side, and the first sliding plate passes through a first sliding groove provided on one side of the machine base.

3. The multi-station automatic feeding nut cold heading machine as described in claim 2, characterized in that: The unloading block is provided with a second sliding plate on one side, and the second sliding plate passes through a second sliding groove provided on one side of the machine base.

4. The multi-station automatic feeding nut cold heading machine as described in claim 3, characterized in that: It also includes a support frame, which is located between the unloading block and the processing table. The support frame has multiple positioning holes on one side, and a push rod is inserted into the positioning hole.

5. A multi-station automatic feeding nut cold heading machine as described in claim 4, characterized in that: The machine base has a discharge port on one side and multiple grooves on the other side. The processing table is adjacent to the discharge port. A protective sleeve is provided on the upper part of the discharge port. The guide rod passes through the grooves and the protective sleeve.

6. A multi-station automatic feeding nut cold heading machine as described in claim 5, characterized in that: The top of the feeding block is provided with a feeding trough, and a transmission belt is provided on one side of it. The inside of the feeding block is provided with a feeding channel. The bottom surface of the feeding trough is inclined, and the port of the feeding channel is located on the inclined bottom surface of the feeding trough.

7. A multi-station automatic feeding nut cold heading machine as described in claim 6, characterized in that: One end of the feed channel is connected to the inside of the feed trough, and the other end is connected to the inside of the feed inlet.

8. A multi-station automatic feeding nut cold heading machine as described in claim 7, characterized in that: The mold sleeve includes a die, a limiting rod and an elastic block. The die has a notch on one side, and the notch is opposite to the end of the feed channel.

9. A multi-station automatic feeding nut cold heading machine as described in claim 8, characterized in that: One end of the die is provided with a fixing plate, and the other end of the die is provided with a limiting rod. The fixing plate is connected to the processing table by bolts.

10. A multi-station automatic feeding nut cold heading machine as described in claim 9, characterized in that: The limiting rod is provided with a positioning block on one side, and the elastic block is provided with a first block and a second block respectively. The first block is inserted between the end of the die and the positioning block, and the second block is inserted between the inner wall of the processing table and the positioning block.

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