Back punching bolt sleeve device for cold heading nut forming machine

Abstract

The utility model relates to the field of cold heading machines, and discloses a back-punching bolt sleeve device for a cold heading nut forming machine, which comprises a main base, a back-punching base is rotatably arranged in the main base, a connecting strip is connected to the top surface of the back-punching base, a plurality of back-punching bolt sleeves are arranged in the connecting strip, and the back-punching bolt sleeves are arranged on the back-punching base. A counter bore is formed in one end of the rear punching bolt sleeve, and the interior of the rear punching bolt sleeve is in threaded connection with a rear punching bolt. According to the device, a worker firstly adjusts the electric sliding rod according to the position of a workpiece needing to be ejected to enable the rear punching base to move along with the electric sliding rod, then the ejection position of the device is adjusted, the rear punching bolt with the proper length is selected to be installed on the connecting strip, the two driving motors are started to enable the device to start to operate, and in the operation process, the rear punching base moves along with the electric sliding rod. Through the counter bore formed in one end of the back-punching bolt sleeve, when the load phenomenon occurs, the back-punching bolt can be automatically broken at the counter bore, and therefore damage to a back-punching system is prevented, and the subsequent discharging efficiency is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cold header, concretely to a rear punch bolt sleeve pipe device for cold heading nut forming machine. BACKGROUND

[0002] Cold heading nut refers to the nut that is formed by cold heading process, and has the characteristics of high strength, high corrosion resistance, high anti-loosening, high material utilization rate and high production efficiency. Cold heading nuts are widely used in mechanical equipment, automobiles, aerospace and other fields due to their excellent performance. These fields have very high performance requirements for fasteners, and cold heading nuts can meet these requirements.

[0003] Cold heading process is a process that uses the plasticity of metal to apply external force to the metal at room temperature to shape it in a predetermined mold. This process is mainly used to manufacture fasteners such as bolts and nuts, as well as parts such as nails, rivets and steel balls. Cold heading process is usually carried out on a dedicated cold header to facilitate continuous, multi-station and automated production. On the cold header, processes such as cutting, heading, accumulation, forming, chamfering, wire drawing, reducing and trimming can be sequentially completed.

[0004] The existing cold heading nut forming machine needs regular maintenance and maintenance to check whether the oil way of each part is normal, whether the fastening is loose, whether the mold is worn, etc. When the rear material ejecting device fails due to load during operation, the rear punch system will be damaged, which may cause the entire device to be unable to operate, greatly affecting the discharge efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a rear punch bolt sleeve pipe device for cold heading nut forming machine to solve the problem that the rear material ejecting device fails due to load during operation, which may damage the rear punch system and cause the entire device to be unable to operate.

[0006] In order to achieve the above-mentioned utility model purposes, the utility model adopts the following technical scheme: a rear punch bolt sleeve pipe device for cold heading nut forming machine, comprising a main base, a rear punch base rotatably arranged inside the main base, a connecting strip connected to the top surface of the rear punch base, a plurality of rear punch bolt sleeve pipes arranged inside the connecting strip, the rear punch bolt sleeve pipe being a hollow structure, a counterbore arranged at one end of the rear punch bolt sleeve pipe, a rear punch bolt threadedly connected inside the rear punch bolt sleeve pipe, the diameter of the counterbore being equal to the diameter of the nut of the rear punch bolt, the depth of the counterbore being adapted to the height of the nut of the rear punch bolt, and a plurality of threaded holes formed in one side of the connecting strip.

[0007] Preferably, two drive motors are connected to each side of the main base, and a rotating shaft is connected between the drive ends of the two drive motors. The rotating shaft is rotatably connected inside the main base. A rotating hole is provided through the rear punch base along its length direction, and the rotating shaft passes through the rotating hole. Two bushings are provided on each side of the rear punch base.

[0008] Preferably, the main base is internally connected to an electric slide rod, the two ends of which are embedded in the two sides of the main base. The slider end of the electric slide rod is connected to a support seat, and the arc-shaped top surface of the support seat is connected to the two bushings.

[0009] Preferably, the inner diameter of the bushing is equal to that of the rotating hole, and both bushings are fitted onto the rotating shaft.

[0010] Preferably, a plurality of limiting rings are provided on one side of the connecting strip, and the limiting rings are threadedly connected to the rear punch bolt.

[0011] Preferably, a water injection platform is connected to the top surface of the connecting strip, and a plurality of water pipes are connected to one side of the water injection platform. The positions of the plurality of water pipes correspond to the ends of the plurality of rear punch bolts that are away from the connecting strip.

[0012] Compared with the prior art, the rear punch bolt sleeve device for a cold heading nut forming machine that adopts the above technical solution has the following beneficial effects:

[0013] 1. During use, the operator first adjusts the electric slide bar to move the support base according to the position of the workpiece to be ejected. At this time, due to the two bushings connected to the arc-shaped top surface of the support base, the rear punch base can be moved accordingly, thereby adjusting the ejection position of the device. Then, select a rear punch bolt of appropriate length and install it on the connecting bar. Then, start the two drive motors to start the device. At this time, since the shape of the middle part of the rotating shaft and the rotating hole are the same, the device can be stably reciprocated. During operation, through the countersunk hole set at one end of the rear punch bolt sleeve, when a load occurs, the rear punch bolt will automatically break at the countersunk hole, thereby preventing damage to the rear punch system and ensuring subsequent material discharge efficiency.

[0014] Second, during use, by matching the size of the countersunk hole and the nut of the back punch bolt, and by connecting the limit ring to the threaded connection of the back punch bolt, it is ensured that the several back punch bolts connected in the connecting strip will not shake during operation, thus ensuring the stability of the device operation. The two bushings connected by the arc-shaped top surface of the support base can limit the back punch base, ensuring that its lateral position will not shift during operation, further improving the stability of the device operation.

[0015] Third, during use, the two bushings can share the load generated by the device during operation, thereby protecting the rotating shaft and increasing the service life of the device. By setting several water pipes and several rear punch bolts corresponding to the end away from the connecting strip, the rear punch bolts can be cooled after multiple collisions, ensuring that the device can operate continuously and stably, which not only improves the service life of the device, but also improves the efficiency of the device. Attached Figure Description

[0016] Figure 1 This is a perspective view of an embodiment.

[0017] Figure 2 This is a breakdown diagram of an embodiment.

[0018] Figure 3 This is a schematic diagram showing the disassembled rear impact base in an embodiment.

[0019] Figure 4 This is a schematic diagram showing the split of the connecting strip in an embodiment.

[0020] Figure 5 This is an exploded view of the rear-punch bolt sleeve in an embodiment.

[0021] In the diagram: 1. Main base; 2. Rear punch base; 3. Connecting strip; 4. Rear punch bolt sleeve; 5. Countersunk hole; 6. Rear punch bolt; 7. Threaded hole; 8. Drive motor; 9. Rotary shaft; 10. Rotary hole; 11. Electric slide rod; 12. Support base; 13. Bushing; 14. Limiting ring; 15. Water injection platform; 16. Water pipe. Detailed Implementation

[0022] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0023] like Figures 1-5 As shown, a back-punch bolt sleeve device for a cold heading nut forming machine includes a main base 1, a back-punch base 2 rotatably disposed inside the main base 1, a connecting strip 3 connected to the top surface of the back-punch base 2, a plurality of back-punch bolt sleeves 4 disposed inside the connecting strip 3, the back-punch bolt sleeves 4 having a hollow structure, a countersunk hole 5 provided at one end of the back-punch bolt sleeve 4, a back-punch bolt 6 threadedly connected inside the back-punch bolt sleeve 4, the diameter of the countersunk hole 5 being equal to the diameter of the nut of the back-punch bolt 6, the depth of the countersunk hole 5 being adapted to the height of the nut of the back-punch bolt 6, a plurality of threaded holes 7 being opened on one side of the connecting strip 3, two drive motors 8 being connected to the two sides of the main base 1 respectively, a rotating shaft 9 being connected between the drive ends of the two drive motors 8, the rotating shaft 9 being rotatably connected inside the main base 1, the back-punch base 2 having a rotating hole 10 extending through its length, the rotating shaft 9 passing through the rotating hole 10, and two bushings 13 being disposed on the two sides of the back-punch base 2 respectively.

[0024] During use, the operator first adjusts the electric slide bar 11 to move the support base 12 according to the position of the ejected workpiece. At this time, the two bushings 13 connected to the arc-shaped top surface of the support base 12 can move the rear punch base 2 accordingly, thereby adjusting the ejection position of the device. Then, a rear punch bolt 6 of appropriate length is installed on the connecting bar 3, and the two drive motors 8 can be started to make the device start running. At this time, since the middle part of the rotating shaft 9 and the rotating hole 10 have the same shape, the device can be guaranteed to rotate stably. During operation, the rear punch bolt 6 will automatically break at the countersunk hole 5 set at one end of the rear punch bolt sleeve 4 when a load occurs, thereby preventing damage to the rear punch system and ensuring subsequent material discharge efficiency.

[0025] like Figure 2 and Figure 3 As shown, an electric slide rod 11 is connected inside the main base 1. The two ends of the electric slide rod 11 are embedded in the two sides of the main base 1. The slider end of the electric slide rod 11 is connected to a support seat 12. The arc-shaped top surface of the support seat 12 is connected to two bushings 13. The inner diameter of the bushing 13 is equal to that of the rotating hole 10. Both bushings 13 are fitted with the rotating shaft 9.

[0026] In use, by matching the size of the countersunk hole 5 with the nut of the rear punch bolt 6, and by connecting the limit ring 14 to the threaded connection of the rear punch bolt 6, it is ensured that the several rear punch bolts 6 connected in the connecting strip 3 will not wobble during operation, thus ensuring the stability of the device operation. The two bushings 13 connected by the arc-shaped top surface of the support base 12 can limit the rear punch base 2, ensuring that its lateral position will not shift during operation, further improving the stability of the device operation.

[0027] like Figures 2-4 As shown, a number of limiting rings 14 are provided on one side of the connecting strip 3. The limiting rings 14 are threadedly connected to the rear punch bolts 6. A water injection platform 15 is connected to the top surface of the connecting strip 3. A number of water pipes 16 are connected to one side of the water injection platform 15. The positions of the water pipes 16 correspond to the ends of the rear punch bolts 6 that are away from the connecting strip 3.

[0028] During use, the two bushings 13 can share the load generated by the device during operation, thereby protecting the rotating shaft 9 and increasing the service life of the device. By setting several water pipes 16 and several rear punch bolts 6 at the ends away from the connecting strip 3, the rear punch bolts 6 can be cooled after multiple collisions, ensuring that the device can operate continuously and stably, which not only improves the service life of the device, but also improves the efficiency of the device.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A rear-punch bolt sleeve device for a cold heading nut forming machine, comprising a main base (1), characterized in that, The main base (1) is rotatably provided with a rear punch base (2). A connecting strip (3) is connected to the top surface of the rear punch base (2). Several rear punch bolt sleeves (4) are provided inside the connecting strip (3). The rear punch bolt sleeves (4) are hollow structures. A countersunk hole (5) is provided at one end of the rear punch bolt sleeves (4). A rear punch bolt (6) is threadedly connected inside the rear punch bolt sleeves (4). The diameter of the countersunk hole (5) is equal to the diameter of the nut of the rear punch bolt (6). The depth of the countersunk hole (5) is adapted to the height of the nut of the rear punch bolt (6). Several threaded holes (7) are opened on one side of the connecting strip (3).

2. The rear punch bolt sleeve device for a cold heading nut forming machine according to claim 1, characterized in that: Two drive motors (8) are connected to each side of the main base (1). A rotating shaft (9) is connected between the drive ends of the two drive motors (8). The rotating shaft (9) is rotatably connected inside the main base (1). A rotating hole (10) is provided through the rear punch base (2) along its length direction. The rotating shaft (9) passes through the rotating hole (10). Two bushings (13) are provided on each side of the rear punch base (2).

3. The rear punch bolt sleeve device for a cold heading nut forming machine according to claim 2, characterized in that: The main base (1) is internally connected to an electric slide rod (11), with both ends of the electric slide rod (11) embedded in the two sides of the main base (1). The slider end of the electric slide rod (11) is connected to a support seat (12), and the arc-shaped top surface of the support seat (12) is connected to two bushings (13).

4. The rear punch bolt sleeve device for a cold heading nut forming machine according to claim 2, characterized in that: The inner diameter of the bushing (13) is equal to that of the rotating hole (10), and both bushings (13) are fitted onto the rotating shaft (9).

5. The rear punch bolt sleeve device for a cold heading nut forming machine according to claim 1, characterized in that: A plurality of limiting rings (14) are provided on one side of the connecting strip (3), and the limiting rings (14) are threadedly connected to the rear punch bolt (6).

6. The rear punch bolt sleeve device for a cold heading nut forming machine according to claim 1, characterized in that: The top surface of the connecting strip (3) is connected to a water injection platform (15), and one side of the water injection platform (15) is connected to several water pipes (16). The positions of the several water pipes (16) correspond to the ends of the several rear punch bolts (6) that are away from the connecting strip (3).

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