Core blanking device

Abstract

The present application is about a core blanking device. The device includes: a blanking trough and an elastic buffer. In the scheme provided by the present application, the core passes through the blanking trough and falls to the supporting core. An elastic buffer is provided on the trough wall of the blanking trough. The blanking trough and the elastic buffer protruding on the trough wall constitute a blanking channel. The size of the blanking channel is adapted to the core, so that the core can just fall vertically and contact and rub with the elastic buffer. At the same time, the elastic buffer is provided with a guide slope at one end close to the blanking direction. The guide slope plays a guiding and guiding role, so that the core can be guided to the center of the blanking buffer channel to ensure that there is no abnormal jamming during the falling process. When the core passes through the blanking trough, the elastic buffer plays a role in slowing down the buffering force of the core directly and quickly falling freely in the blanking trough, avoiding quality abnormalities such as falling and bruising caused by free fall movement and irregular lodging of the core, so that the core can meet the standard requirements of the next step of the process.

Description

Technical Field

[0001] The present application relates to the technical field of iron core moulds, and in particular to an iron core blanking device. Background Art

[0002] The progressive die for motor cores needs to realize the production of cores with multiple stacking thicknesses in one die. The core stacking thickness varies with different customer needs, and the maximum difference can reach 60 to 80 mm. In the mold design, the height of the blanking trough of the progressive die must meet the requirements that the core with the maximum stacking thickness can be smoothly output from the progressive die. When producing cores with small stacking thickness, the blanking trough is too high, and the free fall distance of the core with small stacking thickness in the die increases, resulting in the core being easy to collide with the material output device when using various types of core output structures, resulting in abnormalities such as falling and bruising, tilting and falling, which seriously affects the output quality of the progressive die core.

[0003] In the prior art, Figure 2 This is a prior art progressive die core blanking device, in which:

[0004] After the iron core falls from the iron core blanking chute, it passes through the blanking chute of the lower die seat and falls freely directly to the material receiving and output device. There is no recoil or shock absorption measure. The progressive die iron core is directly transmitted by the material receiving and output device. It is impossible to avoid the small stack of thick iron cores from falling and being damaged, and irregularly tilted and falling.

[0005] Therefore, it is necessary to design a core blanking device to ensure that when the small stack of thick cores falls into the mold blanking chute, it can avoid quality abnormalities such as falling and bruising, irregular core falling, etc. caused by free fall. Summary of the invention

[0006] In order to overcome the problems existing in the related art, the present application provides an iron core dropping device, which can avoid quality abnormalities such as falling and bruising, irregular falling of the iron core, etc. caused by free fall movement through a buffer.

[0007] A first aspect of the present application provides an iron core blanking device, comprising a blanking trough, at least one elastic buffer;

[0008] The elastic buffer is arranged on the slot wall of the blanking slot, and the blanking slot and at least one elastic buffer protruding on the slot wall form a blanking channel, and the size of the blanking channel is adapted to the size of the iron core to be blanked;

[0009] The elastic buffer is provided with a guiding inclined surface at one end close to the blanking direction.

[0010] In one embodiment, the elastic buffer is made of elastic material.

[0011] In one embodiment, the elastic buffer includes a buffer fixing seat, a buffer pad and an elastic bracket, the buffer fixing seat is provided with a radial channel, the elastic bracket is arranged in the radial channel, the length of the elastic bracket is greater than the length of the radial channel, one end of the elastic bracket is connected to the buffer pad, and the other end is connected to a fastener, and the fastener is used to fasten the elastic bracket.

[0012] In one embodiment, the buffer fixing seat is an annular fixing seat, and a positioning groove is provided on the inner ring wall of the buffer fixing seat, and the positioning groove is used to accommodate the buffer pad.

[0013] In one embodiment, the buffer block includes a block hanging platform, and the block hanging platform is arranged on a side of the buffer block opposite to the contact surface of the core falling; the positioning groove is provided with a hanging platform groove adapted to the block hanging platform.

[0014] In one embodiment, the top surface of the blanking trough is higher than the top surface of the buffer fixing seat;

[0015] The inner ring size of the buffer fixing seat is larger than the size of the blanking trough.

[0016] In one embodiment, the guiding slope is arranged on the top surface of the buffer pad, and the guiding slope is inclined toward the center of the bottom surface of the buffer fixing seat.

[0017] In one embodiment, the highest points of the guide slopes are located on the same horizontal plane, and the size of the blanking channel formed by the highest points of the guide slopes is larger than the radial size of the iron core;

[0018] The lowest points of the guiding inclined surfaces are located on the same horizontal plane, and the size of the blanking channel formed by the lowest points of the guiding inclined surfaces is smaller than the radial size of the iron core.

[0019] In one embodiment, the core blanking device further comprises a receiving trough, and the receiving trough is communicated with the blanking trough.

[0020] In one embodiment, the core blanking device further comprises a lower die seat; the blanking trough is arranged on the lower die seat;

[0021] The buffer fixing seat also includes a screw and a first screw hole arranged downward;

[0022] The lower die base is provided with a second screw hole pointing downwards, the first screw hole and the second screw hole are of the same size and are connected, the screw passes through the first screw hole, and the second screw hole fixes the elastic buffer to the lower die base.

[0023] The technical solution provided by the present application may include the following beneficial effects: the solution is provided with a material drop trough, the iron core passes through the material drop trough and falls to the supporting iron core, an elastic buffer is provided on the trough wall of the material drop trough, the material drop trough and the elastic buffer raised on the trough wall constitute a material drop channel, the size of the material drop channel is adapted to the iron core, so that the iron core can just fall vertically and contact and rub with the elastic buffer, and at the same time, the elastic buffer is provided with a guide bevel at one end close to the material drop direction, and the guide bevel is provided so that the iron core first contacts the guide bevel when falling, and the guide bevel It plays a guiding and guiding role, so that the iron core can be guided to the center of the blanking buffer channel to ensure that there will be no jamming abnormalities during the falling process. When the iron core passes through the blanking trough, the elastic buffer generates upward friction through contact and friction with the iron core, which plays a buffering force to slow down the free fall of the iron core directly and quickly in the blanking trough. This structure avoids quality abnormalities such as falling and bruising caused by free fall, irregular lodging of the iron core, etc., which can make the iron core meet the standard requirements of the next step of the process, and enable the same set of progressive dies to achieve normal production of thick iron cores of various specifications.

[0024] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0026] Figure 1 It is a schematic structural diagram of an iron core blanking device shown in an embodiment of the present application;

[0027] Figure 2 It is a schematic structural diagram of a core blanking device in the prior art shown in an embodiment of the present application;

[0028] Figure 3 is an operating state diagram of an iron core blanking device shown in an embodiment of the present application;

[0029] Figure 4 is a top view of an elastic buffer member shown in an embodiment of the present application;

[0030] Figure 5 is a working state diagram of the elastic buffer member shown in an embodiment of the present application;

[0031] Figure 6 is a partial structural diagram of an elastic buffer member shown in an embodiment of the present application;

[0032] Figure 7 This is a connection diagram of a buffer pad and an elastic bracket shown in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0034] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0035] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0036] Embodiment 1

[0037] The progressive die for motor cores needs to realize the production of cores with multiple stacking thicknesses in one die. The core stacking thickness varies with different customer needs, and the maximum difference can reach 60 to 80 mm. In the mold design, the height of the blanking trough of the progressive die must meet the requirements that the core with the maximum stacking thickness can be smoothly output from the progressive die. When producing cores with small stacking thickness, the blanking trough is too high, and the free fall distance of the core with small stacking thickness in the die increases, resulting in the core being easy to collide with the material output device when using various types of core output structures, resulting in abnormalities such as falling and bruising, tilting and falling, which seriously affects the output quality of the progressive die core.

[0038] In the prior art, Figure 2 This is a prior art progressive die core blanking device, in which:

[0039] After the iron core falls from the iron core blanking chute, it passes through the blanking chute of the lower die seat and falls freely directly to the material receiving and output device. There is no recoil or shock absorption measure. The progressive die iron core is directly transmitted by the material receiving and output device. It is impossible to avoid the small stack of thick iron cores from falling and being damaged, and irregularly tilted and falling.

[0040] In view of the above problems, an embodiment of the present application provides an iron core blanking device, which can prevent the iron core from falling and being damaged due to free fall, irregular falling of the iron core, and other quality abnormalities.

[0041] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0042] Figure 1 It is a schematic structural diagram of an iron core blanking device shown in an embodiment of the present application;

[0043] See also Figure 1 ,

[0044] The core blanking device of the embodiment of the present application comprises a blanking trough 1 and an elastic buffer 2, wherein the elastic buffer 2 is arranged on the trough wall of the blanking trough 1, and the elastic buffer 2 is used to provide friction for the core 3 to fall. The core blanking device of the embodiment of the present application is a device for blanking the prepared core 3 after demoulding, and the core blanking device is provided with a blanking trough 1, and the core 3 passes through the blanking trough 1 to reach the supporting core 3, so the core blanking device also comprises a receiving trough 4 for supporting the core 3, and the receiving trough 4 is connected with the blanking trough 1, and the falling direction of the core 3 is taken as the downward direction, and the length of the receiving trough 4 in this direction is greater than the core 3 of the maximum stacking thickness specification, so that when the core 3 reaches the bottom of the receiving trough 4, it can be placed on the receiving trough 4 as a whole.

[0045] In addition to being used for bearing the iron core 3 , the material receiving trough 4 also has the function of outputting the iron core 3 , so the material receiving trough 4 can be set to a drawer-type structure or other structures that can facilitate the output of the iron core 3 .

[0046] The elastic buffer 2 is arranged on the groove wall of the blanking trough 1, and together with the blanking trough 1 forms a blanking channel. The size of the blanking channel is adapted to the size of the iron core 3. The channel can just allow the iron core 3 to pass through and generate contact friction with the elastic buffer 2, playing a buffering role, so that the iron core 3 will not fall over or bump into anything during the falling process.

[0047] The elastic buffer 2 is provided with a guide slope 222 at one end close to the falling direction. Due to the setting of the guide slope 222, the iron core 3 first contacts the guide slope 222 when falling. The guide slope 222 plays a guiding and guiding role, ensuring that the iron core 3 can be guided to the center of the buffer fixing seat 21 and no jamming abnormality will occur during the falling process.

[0048] Beneficial effects of the embodiments of the present application: The embodiments of the present application are provided with a material drop trough, through which the iron core falls to the supporting iron core, and an elastic buffer is provided on the trough wall of the material drop trough, and the material drop trough and the elastic buffer raised on the trough wall constitute a material drop buffer channel, the size of which is adapted to the iron core, so that the iron core can just fall vertically and contact and rub with the elastic buffer, and at the same time, the elastic buffer is provided with a guide slope at one end close to the material drop direction, and the guide slope is provided so that the iron core first contacts the guide slope when falling, and the guide slope plays a role The guiding and leading functions enable the iron core to be guided to the center of the blanking buffer channel and ensure that there will be no jamming abnormalities during the falling process. When the iron core passes through the blanking trough, the elastic buffer generates upward friction through contact and friction with the iron core, which plays a role in slowing down the free fall of the iron core in the blanking trough. This structure avoids quality abnormalities such as falling and bruising, irregular falling of the iron core, etc. caused by free fall motion, and can make the iron core meet the standard requirements of the next step of the process, so that the same set of progressive dies can achieve normal production of thick iron cores of various specifications.

[0049] Embodiment 2

[0050] The core blanking device of the above-mentioned embodiment realizes the normal production of thick cores of various specifications by using the same set of progressive dies. The core blanking device of the embodiment of the present application can not only meet the functions of the above-mentioned embodiment, but also meet the requirements of qualified blanking of cores of different radial sizes.

[0051] The iron core blanking device of the embodiment of the present application comprises a blanking trough 1, an elastic buffer 2, a receiving trough 4 and a lower die seat 5. The blanking trough 1 is connected to the receiving trough 4, and the receiving trough 4 and the blanking trough 1 are both arranged in the lower die seat 5, so that the iron core 3 passes through the blanking trough 1 to reach the receiving trough 4. The elastic buffer 2 is arranged on the trough wall of the blanking trough 1.

[0052] The elastic buffer member 2 comprises a buffer fixing seat 21 and a buffer pad 22 . The buffer fixing seat 21 is an annular fixing seat. The inner ring of the buffer fixing seat 21 is a material drop channel for the iron core 3 to drop. The elastic buffer pad 22 is made of elastic material.

[0053] A positioning groove 211 is provided on the inner wall of the buffer fixing seat 21, and the positioning groove 211 is used to accommodate the buffer pad 22. The shape and material of the buffer pad 22 in the embodiment of the present application are not limited. The material of the exemplary buffer pad 22 is an elastic material. The improvement of the shape of the buffer pad 22 and the application of the material are all within the protection scope of the embodiment of the present application.

[0054] The shape of the buffer block 22 should be compatible with the positioning groove 211 , that is, the buffer block 22 can be accommodated in the positioning groove 211 .

[0055] The elastic buffer 2 is arranged on the wall of the blanking trough 1 and is fixed in the lower die base 5 by means of screws 212 and positioning pins. The elastic buffer 2 includes a buffer fixing seat 21 and a buffer pad 22. A first downward screw hole is arranged on the buffer fixing seat 21, and a second downward screw hole is also arranged in the lower die base 5. The openings of the first screw hole and the second screw hole are connected and fit together, and the openings of the first screw hole and the second screw hole are the same size. A positioning pin 213 is arranged at the bottom of the first screw hole. The screw 212 passes through the first screw hole and the second screw hole, and fixes the buffer fixing seat 21 in the lower die base 5 with the positioning pin 213, thereby fixing the buffer fixing seat 21, so that when the iron core 3 falls, the buffer fixing seat 21 does not move at will, affecting the buffering effect.

[0056] A radial channel is also provided in the buffer fixing seat 21. The radial channel is a direction perpendicular to the falling direction. The size and shape of the radial channel are not limited. The openings at both ends of the radial channel are respectively on the inner ring wall and the outer ring wall of the buffer fixing seat 21, that is, the radial channel connects the inner ring and the outer ring on the buffer fixing seat 21. An elastic bracket 23 is also placed in the radial channel. The length of the elastic bracket 23 is greater than the length of the radial channel. One end of the elastic bracket 23 is connected to the buffer pad 22, and the other end is connected to the fastener 24. The fastener 24 plays the role of fixing the elastic bracket 23. The fastener 24 used in the embodiment of the present application is a screw plug.

[0057] The shape and material of the elastic bracket 23 are not limited in the present invention. The elastic bracket 23 can be an elastic strip made of elastic material, or a spring, or a combination of an elastic strip and a spring. The embodiment of the present application adopts a spring, which is arranged in the radial channel and connected to the buffer pad 22. This structure can meet the buffering effect of the iron core 3 of different radial sizes. That is, when the iron core 3 falls, it contacts and rubs with the buffer pad 22, and generates a certain extrusion force, which squeezes the buffer pad 22 outward in the radial direction. The buffer pad 22 moves outward under the action of the iron core 3 and the spring, leaving a suitable space for the iron core 3 to fall slowly. In practical applications, by adjusting the size of the positioning groove 211, the size of the buffer pad 22 and the length of the spring can meet the blanking requirements of more specifications of the iron core 3.

[0058] The beneficial effects of the embodiments of the present application: the elastic buffer is configured to form a structure of a buffer fixing seat and a buffer pad, the buffer fixing seat is an annular fixing seat, the blanking groove is arranged on the lower die seat, and the elastic buffer is fixed in the lower die seat by screws. During use, the arbitrary movement of the elastic buffer can be prevented from affecting the blanking of the iron core. A radial channel is arranged in the buffer fixing seat, and an elastic bracket is arranged on the radial channel. Through the expansion and contraction of the elastic bracket, the blanking requirements of iron cores with different radial sizes can be met. This structure not only meets the blanking requirements of the iron cores of the same set of progressive dies, but also meets the blanking requirements of the iron cores of different progressive dies, thereby expanding the scope of application and facilitating use in production.

[0059] Embodiment 3

[0060] When the iron core falls and rubs against the buffer block, it will drive the buffer block to move up and down. The up and down movement of the buffer block affects the falling effect of the iron core. Therefore, it is necessary to improve the device on these problems. The embodiments of the present application will improve this problem.

[0061] The elastic buffer 2 of the embodiment of the present application is composed of an annular buffer fixing seat 21 and a buffer pad 22. The annular buffer fixing seat 21 includes a radial channel, and an elastic bracket 23 is arranged in the radial channel. The buffer pad 22 of the embodiment of the present application is provided with a pad hanging platform 221. The pad hanging platform 221 is arranged on the side of the buffer pad 22 that is away from the contact surface of the core 3. The positioning groove 211 is provided with a hanging platform groove 2111 that matches the pad hanging platform 221. The role played by the hanging platform groove 2111 and the pad hanging platform 221 is: the hanging platform groove 2111 plays the role of accommodating the supporting hanging platform, that is, it can prevent the buffer fixing block from moving downward, such as Figure 1 As shown;

[0062] Another way to prevent the buffer fixing block from moving downward is to set a first baffle at the bottom of the positioning groove 211. The setting of the first baffle can also play a role in preventing the buffer fixing block from moving downward.

[0063] In order to prevent the buffer fixing block from jumping up when the iron core 3 falls, the top surface of the blanking trough 1 is set to be higher than the top surface of the buffer fixing seat 21, and the size of the inner ring of the buffer fixing seat 21 is larger than the size of the blanking trough 1. This setting means that the top of the positioning groove 211 is covered by the lower mold seat 5, which can prevent the buffer pad 22 from jumping up. In addition, this structural setting can prevent the iron core 3 from being blocked by the buffer fixing seat 21 when it passes through the blanking trough 1 and enters the inner ring channel of the buffer fixing seat 21.

[0064] Another inventive design to prevent the buffer block 22 from jumping upwards may be to set a second baffle plate on the top of the positioning groove 211, and the second baffle plate can play a role in preventing the buffer block 22 from jumping upwards.

[0065] Different structural improvements that play the same role all fall within the protection scope of this application. The above mentioned roles are exemplary and not restrictive.

[0066] Beneficial effects of the embodiments of the present application: Various structural arrangements of the embodiments of the present application prevent the buffer block from sliding downward or jumping upward when the iron core falls. The arrangement of the pad hanger and the hanging groove, the hanging groove plays the role of supporting the pad hanger, which can prevent the buffer block from moving downward, or a first baffle is arranged at the bottom of the positioning groove to prevent the buffer block from moving downward. By making the blanking trough smaller than the inner ring of the annular buffer fixing seat, the lower die seat covers the top of the positioning groove of the buffer fixing seat, which can prevent the buffer block from jumping upward. The second baffle is arranged at the top of the positioning groove to prevent the buffer block from jumping upward. The scheme arrangement of the embodiments of the present application prevents the buffer pad from moving up and down, and achieves stability when the iron core falls.

[0067] Embodiment 4

[0068] In actual applications, the iron core cannot accurately fall into the center of the buffer fixing seat, which also affects the iron core blanking effect.

[0069] The iron core blanking device of the embodiment of the present application includes any structure of the above-mentioned embodiments 1-3. In addition, the guide bevel 222 of the embodiment of the present application is arranged on the top surface of the buffer pad 22. The guide bevel 222 is inclined toward the center of the bottom surface of the buffer fixing seat 21. Due to the arrangement of the guide bevel 222, the iron core 3 first contacts the guide bevel 222 when falling. The guide bevel 222 plays a guiding and guiding role, ensuring that the iron core 3 can be guided to the center of the buffer fixing seat 21 and no abnormal jamming occurs during the falling process. The highest point of the guide bevel 222 is arranged on the same horizontal plane. The size of the blanking channel formed by the highest point of the guide bevel 222 is larger than the radial size of the iron core 3. Only when it is larger than the radial size of the iron core 3 can the iron core 3 slide downward from the highest point without being stuck by the buffer pad 22.

[0070] The lowest point of the guide slope 222 is set on the same horizontal plane. The size of the blanking channel formed by the lowest point of the guide slope 222 is smaller than the radial size of the iron core 3. The annular structure is smaller than the radial size of the iron core 3, so it will be squeezed with the buffer pad 22 to play a role of friction buffering.

[0071] The number of the buffer pads 22 in the embodiment of the present application is not limited and should be determined according to the actual application. The number of the buffer pads 22 is set within the protection scope of the embodiment of the present application. In order to achieve a better buffering effect in the embodiment of the present application, when the number of the buffer pads 22 is 1, the buffer pad 22 should be set on the inner ring wall of the buffer fixing seat 21 and cover more than half of the area of ​​the inner ring wall.

[0072] When the number of buffer blocks 22 is 2, in order to achieve better buffering effect, the two buffer blocks 22 should be distributed on both ends of the diameter of the buffer fixing seat 21. When the number of buffer blocks 22 is greater than or equal to 3, the distribution of the buffer blocks 22 on the inner ring wall should satisfy that the triangle formed by at least three of the buffer blocks 22 on the plane perpendicular to the downward direction is an acute triangle.

[0073] Beneficial effects of the embodiments of the present application: In the embodiments of the present application, the iron core first contacts the buffer block through the setting of the guiding inclined surface, and the guiding inclined surface of the buffer block is used for guiding to ensure that the iron core can be guided to the center of the buffer fixing seat, and no jamming abnormality will occur during the blanking process. In this process, the radial dimension of the iron core is larger than the spacing between the blanking buffer blocks, and the blanking buffer blocks will be squeezed to move radially during the blanking movement, so that the blanking buffer blocks are close to the iron core, and the friction force causes the iron core to slow down and slide down until it is separated from the iron core blanking buffer fixing seat. When the iron core completely passes through the iron core blanking buffer fixing seat, the blanking buffer block no longer contacts the iron core, the radial pressure of the iron core it is subjected to disappears, and the side top spring of the buffer fixing seat returns to its initial pre-compression state.

[0074] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A core blanking device, characterized in that: It comprises a material dropping chute (1) and at least one elastic buffer (2); The elastic buffer (2) is arranged on the slot wall of the blanking slot (1), and the blanking slot (1) and at least one elastic buffer (2) protruding from the slot wall form a blanking channel, and the size of the blanking channel is adapted to the size of the iron core (3); A guiding inclined surface (222) is provided at one end of the elastic buffer member (2) close to the blanking direction; The elastic buffer (2) comprises a buffer fixing seat (21), a buffer pad (22) and an elastic bracket (23); the buffer fixing seat (21) is provided with a radial channel; the elastic bracket (23) is arranged in the radial channel; the length of the elastic bracket (23) is greater than the length of the radial channel; one end of the elastic bracket (23) is connected to the buffer pad (22) and the other end is connected to a fastener (24); the fastener (24) is used to fasten the elastic bracket (23); the buffer fixing seat (21) is provided with a radial channel; the elastic bracket (23 ... The fixed seat (21) is an annular fixed seat, and a positioning groove (211) is provided on the inner ring wall of the buffer fixed seat (21), and the positioning groove (211) is used to accommodate the buffer cushion block (22); the buffer cushion block (22) comprises a cushion block hanging platform (221), and the cushion block hanging platform (221) is arranged on a side of the buffer cushion block (22) that is away from the contact surface of the iron core (3) when it falls; the positioning groove (211) is provided with a hanging platform groove (2111) that is compatible with the cushion block hanging platform (221); The top surface of the blanking trough (1) is higher than the top surface of the buffer fixing seat (21); The inner ring size of the buffer fixing seat is larger than the size of the blanking trough (1).

2. The core blanking device according to claim 1, characterized in that: The guiding inclined surface (222) is arranged at one end of the buffer pad (22) close to the blanking direction, and the guiding inclined surface (222) is inclined towards the center of the bottom surface of the buffer fixing seat (21).

3. The core blanking device according to claim 1, characterized in that: The highest points of the guiding inclined surfaces (222) are located on the same horizontal plane, and the size of the blanking channel formed by the highest points of the guiding inclined surfaces (222) is larger than the radial size of the iron core (3); The lowest points of the guiding inclined surfaces (222) are located on the same horizontal plane, and the size of the blanking channel formed by the lowest points of the guiding inclined surfaces (222) is smaller than the radial size of the iron core (3).

4. The core blanking device according to claim 1, characterized in that: The iron core blanking device further comprises a receiving trough (4), wherein the receiving trough (4) is connected to the blanking trough (1).

5. The core blanking device according to claim 1, characterized in that: The core blanking device further comprises a lower die seat (5); the blanking trough (1) is arranged on the lower die seat (5); The buffer fixing seat (21) further comprises a screw (212) and a first screw hole arranged downward; The lower die base (5) is provided with a second screw hole pointing downwards, the first screw hole and the second screw hole are of the same size and are connected, the screw (212) passes through the first screw hole, and the second screw hole fixes the elastic buffer (2) to the lower die base (5).

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