Lead sleeve and steel core combining device

Abstract

The invention discloses a lead sleeve steel core assembling device, relates to the technical field of bullet head assembling, and adopts a pure mechanical mechanism to realize assembling. Manual debugging of the pressing force of the rubber mold can be avoided, and debugging is not needed after the mold is replaced. The defects of an original structure can be completely avoided, and the problems of equipment debugging, mold replacement debugging and the like are avoided. When a production worker uses the device, the equipment debugging time can be effectively shortened in the production process, the device does not depend on the experience of the equipment debugging worker any more, and the product size is not affected by the lubricating liquid concentration, temperature and the like in the production process any more. And meanwhile, when the state of the supplied material part changes, the tool can be normally suitable for production, and secondary tool adjustment is not needed. Due to the fact that the steel die is adopted for limiting, the consistency and stability of the product size are well controlled.

Description

Technical Field

[0001] The present invention relates to the technical field of bullet head assembly, and particularly to a lead sleeve and steel core assembly device that can be used in cooperation with a punching machine and has a one-way valve limiting function. Background Art

[0002] In the production of large-caliber machine gun bullets, components such as lead sleeves and steel cores are used as bullet heads. The assembly of lead sleeves and steel cores is one of the important links in the bullet head assembly process. In the traditional lead sleeve and steel core assembly process, each manufacturer basically adopts a single-machine production mode. After separately producing the lead sleeves and steel cores, the lead sleeves are dried and sorted, and finally, the lead sleeves are manually placed and the steel cores are loaded, and the single-machine mode of machine pressing is used for the assembly of lead sleeves and steel cores.

[0003] In the patent document with the application number 202211199524.9, a lead sleeve and steel core assembly device is provided, which realizes the assembly of lead sleeves and steel cores by using a double-rubber mold method. During production, the punch rod sends the previously prepared lead sleeves and sorted steel cores into the rubber mold together. The pre-assembly of the lead sleeve and the steel core is realized through rubber mold a (the sizes of the lead sleeve and the steel core do not need to be in place); the final assembly of the lead sleeve and the steel core is realized through rubber mold b (the assembly sizes of the lead sleeve and the steel core are in place), thereby completing the assembly and forming of the lead sleeve and the steel core. The rubber molds a and b are elastic and the inner holes are adjustable. This method realizes the assembly of lead sleeves and steel cores by using the friction force method. The principle is to adjust the size of the inner hole of the rubber mold, so as to realize the adjustable friction force and achieve the purpose of assembling the steel core and the lead sleeve.

[0004] This method has the following disadvantages:

[0005] ① The shrinkage amount of the rubber mold pressing is adjusted by a nut, which cannot be quantified. The debugging depends very much on the operator's hand feeling and experience, and the debugging is difficult.

[0006] ② The friction force of the rubber mold is uncontrollable. When replacing the mold, the pressing amount needs to be re-adjusted, resulting in a long debugging time.

[0007] ③ There is a high requirement for the surface consistency of the steel core. When changing the batch of the steel core, the rubber mold may need to be re-adjusted.

[0008] ④ It depends on the lubrication effect of the soap solution. The concentration and temperature of the soap solution both affect the dimensional consistency of the assembled parts.

[0009] ⑤ Before starting work, it is necessary to run in many times to reach the lubrication condition before the assembled parts can meet the requirements.

[0010] Due to the above disadvantages, the equipment commissioning time is long in this way. The commissioning depends on the employee's experience and the soap solution concentration, has a high requirement for the consistency of parts, and is easily affected by material changes, resulting in unstable or even unqualified product dimensions (the assembly dimensions vary greatly and are unstable). Summary of the Invention

[0011] In view of the above problems, the present invention provides a lead sleeve steel core assembly device for overcoming the above problems or at least partially solving the above problems. The use of a unidirectional mold can not only achieve the control of the dimensional stability of the steel core assembly process, but also ensure the structural applicability of the lead sleeve steel core on the punching machine, and perform flexible compensation for the punching machine stroke.

[0012] The present invention provides the following solutions:

[0013] A lead sleeve steel core assembly device, comprising:

[0014] An assembly execution unit, the assembly execution unit includes a main slider assembly and a return punch slider assembly. The main slider assembly includes a main slider and a punch rod connected to the main slider. The return punch slider assembly includes a return punch slider and a return punch steel die. The main slider and the return punch slider move synchronously under the action of an external power assembly. The punch rod and the return punch steel die are arranged coaxially.

[0015] An assembly unidirectional mold unit, the assembly unidirectional mold unit is located between the punch rod and the return punch steel die. The assembly unidirectional mold unit includes a mold steel sleeve, an adjusting nut, a rubber mold, a one-way valve and an assembly steel die. The inside of the mold steel sleeve is hollow and is separated by a partition to form a first cavity and a second cavity. The inner walls of the respective distal ends of the first cavity and the second cavity are provided with internal threads. The rubber membrane is arranged in the first cavity and is limited between the adjusting nut and the partition by the adjusting nut. The assembly steel die is connected to the second cavity in a threaded connection manner. The one-way valve is arranged in a free state between the assembly steel die and the partition.

[0016] Wherein, the adjusting nut includes a first inner hole, the rubber membrane includes a second inner hole, the partition includes a third inner hole, the one-way valve includes a fourth inner hole, and the assembly steel die includes a fifth inner hole. The axes of the first inner hole, the second inner hole, the third inner hole and the fifth inner hole are arranged coaxially with the punch rod.

[0017] The one-way valve can slide freely up and down between the partition and the assembly steel die. After the lead sleeve steel core assembly to be assembled passes through the rubber membrane for pre-assembly, the lead sleeve steel core assembly to be assembled will lift the one-way valve under the push of the punch rod so that the lead sleeve steel core assembly to be assembled passes through the fourth inner hole and enters the fifth inner hole, and will fall back to form a block on the rear end of the lead sleeve steel core assembly to be assembled after the punch rod retracts and the lead sleeve steel core assembly to be assembled completely enters the fifth inner hole, so that the lead sleeve and the steel core are pressed and assembled under the action of the return punch force of the return punch steel die.

[0018] Preferably, the external power assembly includes a punching press, and the main slider and the return slider are connected to the punching press through a connecting mechanism, so that the main slider and the return slider move synchronously under the action of the punching press.

[0019] Preferably, each of the first inner hole, the second inner hole, the fourth inner hole, and the fifth inner hole has a guiding port structure at one end facing the punching rod.

[0020] Preferably, the pressure of the adjusting nut on the rubber membrane is changed to adjust the aperture of the second inner hole, so as to realize the pre-installation suitable for the lead sleeve steel core assembly of different sizes.

[0021] Preferably, a limiting step is provided at the connection between the inner wall of the second cavity and the internal thread. The limiting step is used to limit the length of the combined steel mold entering the interior of the second cavity, so that the one-way valve can move freely between the combined steel mold and the partition plate.

[0022] Preferably, the return punching die is connected to the return slider through a return stroke flexible compensation mechanism. The return stroke flexible compensation mechanism is used to perform return compensation when the return stroke of the return slider is completely completed and the return stroke is insufficient.

[0023] Preferably, the return stroke flexible compensation mechanism includes a return mounting plate, a return adjusting plate, a guiding component, a mounting seat, and a cylinder; the return punching die and the return adjusting plate are both connected to the return mounting plate, the guiding component is respectively connected to the return adjusting plate and the cylinder, the guiding component and the cylinder are both connected to the mounting seat, and the mounting seat is connected to the return slider.

[0024] Preferably, the guiding component includes at least two groups of guiding sleeves and guiding shafts.

[0025] According to the specific embodiments provided by the present invention, the following technical effects are disclosed by the present invention:

[0026] A lead sleeve steel core combined device provided by an embodiment of the present application realizes combination by using a pure mechanical mechanism. It can avoid manual debugging of the pressing force of the rubber mold, and no debugging is required after replacing the mold. It can completely avoid the disadvantages of the original structure and avoid problems such as equipment commissioning at the start of production and debugging after replacing the mold. During the production process, production personnel can effectively reduce the equipment debugging time by using this device, no longer rely on the experience of equipment debugging personnel, and the concentration and temperature of the lubricating fluid during the production process no longer affect the product size. At the same time, when the states of the incoming parts change, it can also adapt to production normally without secondary adjustment of the tooling. Due to the use of steel mold limiting, the consistency and stability of the product size are well controlled.

[0027] Of course, it is not necessary for any product implementing the present invention to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0029] Figure 1 is a schematic structural diagram of a lead sleeve steel core assembling device provided by an embodiment of the present invention;

[0030] Figure 2 is a schematic structural diagram of an assembling unidirectional mold unit provided by an embodiment of the present invention;

[0031] Figure 3 is a schematic structural diagram of a backflush slider assembly provided by an embodiment of the present invention.

[0032] In the figure: assembling unidirectional mold unit 1, mold steel sleeve 101, adjusting nut 102, rubber mold 103, one-way valve 104, assembling steel mold 105, backflush steel mold 106, lead sleeve steel core assembly to be assembled 107, backflush slider assembly 2, backflush slider 201, backflush mounting plate 202, backflush adjustment plate 203, guide sleeve 204, guide shaft 205, mounting seat 206, cylinder 207, main slider assembly 3. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention fall within the scope of protection of the present invention.

[0034] See Figure 1 、 Figure 2 、 Figure 3 , a lead sleeve steel core assembling device provided by an embodiment of the present invention, as shown in Figure 1 、 Figure 2 、 Figure 3 shown, the device may include:

[0035] Combined assembly execution unit, the combined assembly execution unit includes a main slider assembly 3 and a backflush slider assembly 2. The main slider assembly 3 includes a main slider and a punch rod connected to the main slider. The backflush slider assembly 2 includes a backflush slider 201 and a backflush steel die 106. The main slider and the backflush slider 201 move synchronously under the action of an external power assembly. The punch rod and the backflush steel die 106 are arranged coaxially.

[0036] Combined assembly one-way die unit 1, the combined assembly one-way die unit 1 is located between the punch rod and the backflush steel die 106. The combined assembly one-way die unit 1 includes a die steel sleeve 101, an adjusting nut 102, a rubber die 103, a one-way valve 104, and a combined assembly steel die 105. The inside of the die steel sleeve 101 is hollow and is separated by a partition to form a first cavity and a second cavity. The inner walls of the respective distal ends of the first cavity and the second cavity are provided with internal threads. The rubber film 103 is disposed in the first cavity and is limited between the adjusting nut 102 and the partition by the adjusting nut 102. The combined assembly steel die 105 is connected to the second cavity in a threaded connection manner. The one-way valve 104 is disposed in a free state between the combined assembly steel die 105 and the partition.

[0037] Wherein, the adjusting nut 102 includes a first inner hole, the rubber film 103 includes a second inner hole, the partition includes a third inner hole, the one-way valve 104 includes a fourth inner hole, and the combined assembly steel die 105 includes a fifth inner hole. The axes of the first inner hole, the second inner hole, the third inner hole, and the fifth inner hole are arranged coaxially with the punch rod.

[0038] The one-way valve 104 can slide freely up and down between the partition and the combined assembly steel die 105. After the lead sleeve steel core assembly 107 to be combined and assembled is pre-installed through the rubber film 103, the lead sleeve steel core assembly 107 to be combined and assembled will lift the one-way valve 104 under the push of the punch rod so that the lead sleeve steel core assembly 107 to be combined and assembled passes through the fourth inner hole and enters the fifth inner hole. After the punch rod retracts and the lead sleeve steel core assembly 107 to be combined and assembled completely enters the fifth inner hole, it will fall back to form a block on the rear end of the lead sleeve steel core assembly 107 to be combined and assembled, so that the lead sleeve steel core assembly 107 to be combined and assembled can realize the press-fitting of the lead sleeve and the steel core under the backflush force of the backflush steel die 106.

[0039] The lead sleeve and steel core assembling device provided by the embodiment of the present application realizes the assembling of the lead sleeve and the steel core by adopting a combined mode of a rubber mold and a steel mold. The front-end adjusting nut is tightened to realize the adjustment by the rubber mold, and the rear end adopts the steel mold and the one-way valve mechanism to realize the rigid control of the assembling size of the steel core. The one-way valve structure is designed to ensure the anti-retreat and limit of the steel core during the assembling process. The sliding one-way valve structure can automatically close the one-way valve under the action of gravity, and a guiding port is designed at the front end of the one-way valve to ensure the smooth opening of the one-way valve.

[0040] This device can be used for the assembling of the lead sleeve and the steel core. The anti-retreat and positioning of the press-fitting of the steel core and the lead sleeve are realized through the one-way valve, so that the lead sleeve and the steel core are assembled together by relying on the back-punch of the punching machine. The consistency of the size of the lead sleeve and steel core assembling part is restricted by the rigid mold, ensuring the stable and reliable assembling size of the lead sleeve and the steel core.

[0041] The punch rod and the back-punch steel mold 106 provided by the embodiment of the present application can perform synchronous linear reciprocating motions back and forth under the drive of an external power assembly. The external power assembly can adopt various methods. For example, in one implementation manner, the embodiment of the present application can provide that the external power assembly includes a punching machine, and the main slider and the back-punch slider 201 are connected to the punching machine through a connecting mechanism, so that the main slider and the back-punch slider 201 perform synchronous motions under the action of the punching machine.

[0042] In order to ensure that the lead sleeve and steel core assembly 107 to be assembled can smoothly enter each inner hole, the embodiment of the present application can also provide that the first inner hole, the second inner hole, the fourth inner hole, and the fifth inner hole of the lead sleeve and steel core assembly 107 to be assembled each have a guiding port structure at one end facing the punch rod.

[0043] The rubber membrane 103 provided by the embodiment of the present application can realize the pre-assembly of the lead sleeve and steel core assembly 107 to be assembled. In order to adapt to different sizes of the lead sleeve and steel core assembly 107 to be assembled, the embodiment of the present application can also provide to change the pressure of the adjusting nut 102 on the rubber membrane 103 to realize the adjustment of the aperture of the second inner hole, so as to realize the pre-assembly of adapting to different sizes of the lead sleeve and steel core assembly 107 to be assembled. By adjusting the aperture of the second inner hole, the friction force between the lead sleeve and steel core assembly 107 to be assembled and the second inner hole can also be adjusted, and while ensuring the adaptation to different sizes of the lead sleeve and steel core assembly 107 to be assembled, the pre-assembly force can also be adjusted.

[0044] In the embodiment of the present application, the one-way valve 104 is provided to limit the lead sleeve steel core assembly 107 to be assembled by the method of being lifted to open and closed by gravity. Therefore, the one-way valve 104 needs to be able to slide freely between the assembling die 105 and the partition plate. In order to prevent the assembling die 105 from being installed too tightly and affecting the sliding of the one-way valve 104, the embodiment of the present application can also provide that a limiting step is provided at the connection between the inner wall of the second cavity and the internal thread. The limiting step is used to limit the length of the assembling die 105 entering the inside of the second cavity, so that the one-way valve 104 can move freely between the assembling die 105 and the partition plate.

[0045] In order to compensate for the insufficient return stroke of the return punch slider 201, the embodiment of the present application can also provide that the return punch die 106 is connected to the return punch slider 201 through a return stroke flexible compensation mechanism. The return stroke flexible compensation mechanism is used to perform return stroke compensation when the return stroke of the return punch slider 201 is not enough after the entire stroke is completed.

[0046] Furthermore, the return stroke flexible compensation mechanism includes a return mounting plate 202, a return adjustment plate 203, a guiding assembly, a mounting seat 206, and a cylinder 207; the return punch die 106 and the return adjustment plate 203 are both connected to the return mounting plate 202, the guiding assembly is respectively connected to the return adjustment plate 203 and the cylinder 207, the guiding assembly and the cylinder 207 are both connected to the mounting seat 206, and the mounting seat 206 is connected to the return punch slider 201.

[0047] The guiding assembly includes at least two groups of guide sleeves 204 and guide shafts 205. The return stroke flexible compensation mechanism realizes the compensation of the slider stroke and flexible pressing when the return punch slider 201 of the punching machine has the maximum stroke in the way of the cylinder 207. The return stroke flexible compensation mechanism uses the cylinder as a flexible carrier for stroke compensation. When the return stroke of the return punch slider reaches the limit, the flexible compensation mechanism is used to realize the secondary stroke compensation.

[0048] The lead sleeve steel core assembling device provided by the embodiment of the present application mainly consists of a lead sleeve steel core assembling one-way die unit 1 and a lead sleeve steel core assembling punch return stroke flexible compensation mechanism. Among them, the lead sleeve steel core assembling one-way die unit 1 mainly consists of a die steel sleeve 101, an adjusting nut 102, a rubber die 103, a one-way valve 104, a die, a return punch die 106, a lead sleeve steel core assembly 107, etc.

[0049] Specifically, the die steel sleeve 101 serves as the installation base for the entire die. The interior of the die steel sleeve 101 is partitioned by a partition to form a first cavity and a second cavity. Threaded holes are designed at the front ends of the first cavity and the second cavity respectively. At the front end, the rubber mold 103 is inserted into the hole of the first cavity, and then the adjusting nut 102 is installed. By tightening the adjusting nut 102, the rubber mold 103 is pressed tightly and the size of the inner hole of the rubber mold 103 is adjusted, thereby changing the frictional force of the rubber mold 103 on the lead sleeve. The front-end rubber mold 103 serves as a pre-assembly mechanism for the lead sleeve and the steel core. When the main slider assembly 3 of the punching press pushes the lead sleeve steel core into the front end of the die, the pre-assembly of the lead sleeve steel core assembly can be achieved (the sizes of the lead sleeve and the steel core do not need to be in place).

[0050] Threaded holes are also designed in the second cavity at the rear end of the die steel sleeve 101. The one-way valve 104 is installed in the one-way valve 104 cavity formed between the die steel sleeve 101 and the assembled steel die 105. The threaded hole is designed with a limiting step to prevent the assembled steel die 105 from affecting the flexibility of the one-way valve 104 after being tightened. The one-way valve 104 is designed with an arc-shaped guiding port at the front end. When the main slider assembly 3 of the punching press pushes the lead sleeve steel core assembly into the one-way valve 104, the one-way valve 104 is lifted by the lead sleeve steel core assembly 107, and the one-way valve 104 opens, allowing the lead sleeve steel core assembly 107 to enter the assembled steel die 105.

[0051] When the main slider of the punching press retracts, the one-way valve 104 falls back, and at this time the one-way valve 104 closes. At the same time as the main slider retracts, the return punch slider 201 drives the return punch die 106, and then the lead sleeve steel core assembly 107 is press-fitted through the lead sleeve steel core assembly return punch stroke flexible compensation mechanism of the punching press.

[0052] During press-fitting, the one-way valve 104 is closed, and the steel core is limited by the one-way valve 104. Under the action of the cylinder 207, the return punch die 106 realizes the press-fitting of the lead sleeve and the steel core. By designing the cooperation between the return punch die 106 and the steel die, the press-fitting size is stable and consistent.

[0053] Among them, the lead sleeve steel core assembly return punch stroke flexible compensation mechanism mainly consists of a return punch slider 201, a return punch mounting plate 202, a return punch adjustment plate 203, a guide sleeve 204, a guide shaft 205, a mounting seat 206, a cylinder 207, a return punch die 106, etc. The return punch slider 201 and the main slider assembly can be connected to the punching press to achieve synchronous movement.

[0054] Specifically, the flexible supplementary mechanism for the return stroke of the lead sleeve steel core combined punching machine mainly functions as a compensation for insufficient return stroke after the entire stroke of the return stroke slider 201 is completed. The return punching die 106 is installed on the return mounting plate 202, and the mounting plate is connected to the return adjustment plate 203 to achieve adjustment of the return position. The stroke compensation is realized by installing the guide shaft 205, the guide sleeve 204, and the cylinder 207 on the mounting seat 206. The guide shaft 205 and the guide sleeve 204 can ensure the straight movement within the return stroke, thereby ensuring the return accuracy. Moreover, the stroke of the cylinder 207 can stop at any position. When the return stroke is restricted by the lead sleeve steel core, the stroke of the cylinder 207 stops. When the length of the lead sleeve steel core assembly 107 varies within the allowable range, the stroke compensation mechanism can achieve flexible supplementary of the return stroke of the lead sleeve steel core combined punching machine under the action of the cylinder 207.

[0055] When the device is in use, the lead sleeve and the steel core are provided to the combined single-direction die unit 1. The punching machine starts and drives the punch rod to move towards the combined single-direction die unit 1. The punch rod pushes the lead sleeve and the steel core through the first inner hole of the adjusting nut 102 into the second inner hole of the rubber membrane. After passing through the second inner hole, the lead sleeve and the steel core are pre-assembled, and then pass through the third inner hole of the partition plate into the fourth inner hole of the one-way valve 104. During the movement process, the one-way valve 104 is lifted and the one-way valve 104 opens. The punch rod continues to move forward and pushes the lead sleeve and the steel core into the fifth inner hole of the combined punching die 105. During the movement of the punch rod towards the combined single-direction die unit 1, the return stroke slider assembly 2 moves in the same direction.

[0056] When the lead sleeve and the steel core completely enter the fifth inner hole, the punching machine drives the main slider assembly 3 and the return stroke slider assembly 2 to return. After the punch rod exits the fourth through-hole, the one-way valve 104 loses the supporting force and drops under the action of gravity, closing the one-way valve 104. The lead sleeve and the steel core are limited within the fifth inner hole. As the return stroke progresses, the return punching die 106 contacts the front end of the steel core, realizing the press-fitting of the lead sleeve and the steel core. If the return stroke of the return stroke slider 201 is insufficient, the return stroke is compensated by the flexible supplementary mechanism for the return stroke. Specifically, when the return stroke slider 201 stops moving, the cylinder 207 acts to push the return punching die 106 to continue moving towards the steel core until the position is restricted by the lead sleeve steel core, and then the stroke of the cylinder 207 stops. One-time assembly of the lead sleeve and the steel core is completed. When the next assembly is carried out, the assembled lead sleeve and steel core located within the fifth inner hole can be ejected by the next set of lead sleeve and steel core, and the assembly operation can be repeated in this way.

[0057] In summary, the lead sleeve steel core assembly device provided by this application realizes assembly through a pure mechanical mechanism. It can avoid manual debugging of the pressing force of the rubber mold and does not require debugging after changing the mold. It can completely avoid the shortcomings of the original structure and problems such as equipment commissioning at the start of production and debugging after changing the mold. During production, production personnel can effectively reduce the equipment commissioning time by using this device, no longer relying on the experience of equipment commissioning personnel. The concentration and temperature of the lubricating fluid during the production process no longer affect the product size. At the same time, when the state of the incoming parts changes, it can also adapt to production normally without secondary adjustment of the tooling. Due to the use of steel mold limit, the consistency and stability of the product size are well controlled.

[0058] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0059] From the description of the above embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus a necessary general hardware platform. Based on this understanding, the technical solution of this application, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including several instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of this application.

[0060] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for a system or system embodiment, since it is basically similar to the method embodiment, the description is relatively simple. For the relevant parts, reference can be made to the description of the method embodiment. The systems and system embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without creative work.

[0061] The above description is only for the preferred embodiments of the present invention and is not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A lead sheath steel core assembly device, characterized in that: include: The combined execution unit comprises a main slider assembly and a backwash slider assembly, wherein the main slider assembly comprises a main slider and a punch rod connected to the main slider, and the backwash slider assembly comprises a backwash slider and a backwash steel die; the main slider and the backwash slider move synchronously under the action of an external power assembly; the punch rod and the backwash steel die are arranged coaxially; A combined one-way mold unit, the combined one-way mold unit is located between the punch rod and the return steel mold, and the combined one-way mold unit includes a mold steel sleeve, an adjusting nut, a rubber mold, a one-way valve and a combined steel mold; the interior of the mold steel sleeve is hollow and is separated by a partition to form a first cavity and a second cavity; the inner walls of the first cavity and the second cavity at the far end are each provided with an internal thread; the rubber membrane is arranged in the first cavity and is limited by the adjusting nut between the adjusting nut and the partition; the combined steel mold is connected to the second cavity in a threaded connection manner, and the one-way valve is arranged in a free state between the combined steel mold and the partition; The adjusting nut includes a first inner hole, the rubber membrane includes a second inner hole, the partition includes a third inner hole, the one-way valve includes a fourth inner hole, and the assembled steel mold includes a fifth inner hole; the axes of the first inner hole, the second inner hole, the third inner hole and the fifth inner hole are arranged coaxially with the punch rod; The one-way valve can slide freely up and down between the partition and the assembling steel mold. After the lead sheath steel core component to be assembled is pre-installed by the rubber membrane, the lead sheath steel core component to be assembled will lift the one-way valve under the push of the punch rod so that the lead sheath steel core component to be assembled passes through the fourth inner hole and enters the fifth inner hole, and after the punch rod is retracted and the lead sheath steel core component to be assembled completely enters the fifth inner hole, it falls back to form a block on the rear end of the lead sheath steel core component to be assembled, so that the lead sheath and the steel core can be pressed together under the recoil force of the recoil steel mold.

2. The lead sheath steel core assembly device according to claim 1, characterized in that: The external power assembly includes a punch press, and the main slider and the return slider are connected to the punch press through a connecting mechanism, so that the main slider and the return slider can move synchronously under the action of the punch press.

3. The lead sheath steel core assembly device according to claim 1, characterized in that: The first inner hole, the second inner hole, the fourth inner hole and the fifth inner hole each have a guide opening structure toward one end of the punch rod.

4. The lead sheath steel core assembly device according to claim 1, characterized in that: The pressure of the adjusting nut on the rubber membrane is changed to adjust the aperture of the second inner hole, so as to realize the pre-installation of the lead sheath steel core components to be assembled to adapt to different sizes.

5. The lead sheath steel core assembly device according to claim 1, characterized in that: A limiting step is provided at the connection between the inner wall of the second cavity and the internal thread, and the limiting step is used to limit the length of the assembled steel mold entering the second cavity, so that the one-way valve can move freely between the assembled steel mold and the partition.

6. The lead sheath steel core assembly device according to claim 1, characterized in that: The backwash steel die is connected to the backwash slider via a backwash stroke flexible supplement mechanism, and the backwash stroke flexible supplement mechanism is used to perform backwash compensation when the backwash stroke is insufficient after the backwash slider has completed its stroke.

7. The lead sheath steel core assembly device according to claim 6, characterized in that: The flexible supplement mechanism of the recoil stroke includes a recoil mounting plate, a recoil adjustment plate, a guide assembly, a mounting seat and a cylinder; the recoil steel mold and the recoil adjustment plate are both connected to the recoil mounting plate, the guide assembly is respectively connected to the recoil adjustment plate and the cylinder, the guide assembly and the cylinder are both connected to the mounting seat, and the mounting seat is connected to the recoil slider.

8. The lead sheath steel core assembly device according to claim 7, characterized in that: The guide assembly comprises at least two groups of guide sleeves and a guide shaft.

Images