Motor core stator sheet stacking and discharging mold

Abstract

The application belongs to the technical field of stator sheet production, and particularly relates to a motor core stator sheet stacking and discharging mold, which comprises an upper mold, a lower mold matched with the upper mold, a punch for punching a core stator sheet arranged on the upper mold, a recess matched with the punch arranged on the lower mold, a discharging hole arranged on the lower side of the recess of the lower mold, a first sliding groove arranged on the right side of the discharging hole in a transverse direction, a sliding block for preventing the stator sheet from falling out of the discharging hole assembled in the first sliding groove, an insertion block arranged on the upper end of the sliding block, an insertion groove matched with the insertion block arranged on the top wall of the first sliding groove, an elastic element fixedly connected to the right end of the sliding block, a containing groove for containing the elastic element arranged on the right wall of the first sliding groove, and the right end of the elastic element is connected to the right wall of the containing groove. The sliding block for limiting the sheet of the discharging mold does not need to be driven by an additional power device and does not need to be controlled additionally. The sliding block can automatically discharge according to the number of stacked sheets, and the degree of automation is high.

Description

Technical Field

[0001] This invention belongs to the field of stator lamination production technology, specifically relating to a die for stacking and unloading stator laminations of motor cores. Background Technology

[0002] To facilitate the ejection of motor core stator laminations in a stack from a stamping die, a Chinese utility model patent discloses a die for ejecting stacked motor core stator laminations. This die includes an upper die and a lower die that mates with it. The upper die has a stator blanking punch for blanking the stator laminations, and the lower die has a stator blanking die that mates with the punch. The lower part of the blanking die has a stator lamination ejection hole. A slidable anti-fall locking device is provided on the side of the stator lamination ejection hole near the lower die side to temporarily prevent the stator laminations from falling out of the hole. This anti-fall locking device is connected to a power unit located on the lower die side. However, this anti-fall locking device requires an additional power unit for operation and control, resulting in low automation. Therefore, we have improved this die. Summary of the Invention

[0003] The purpose of this invention is to provide a die for stacking and unloading loose motor core stator laminations, in order to solve the problems existing in the prior art.

[0004] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0005] A die for discharging stator laminations of an electric motor includes an upper die and a lower die that matches the upper die. The upper die is provided with a punch for punching stator laminations, and the lower die is provided with a die that matches the punch. The lower die has a discharge hole located below the die. A first horizontally arranged groove is provided on the right side of the discharge hole. A slider for preventing stator laminations from falling out of the discharge hole is installed in the first groove.

[0006] The upper end of the slider is provided with an insert block, and the top wall of the first slide groove is provided with a slot that matches the insert block. An elastic element is fixedly connected to the right end of the slider. The right wall of the first slide groove is provided with a receiving groove for accommodating the elastic element. The right end of the elastic element is connected to the right wall of the receiving groove. When the upper end of the slider abuts against the top wall of the first slide groove, the right end of the elastic element is higher than the left end.

[0007] The slider is provided with push rods on both the front and rear sides. The slider is provided with guide push blocks that slide left and right in the lower mold on both the front and rear sides. The guide push blocks have inclined surfaces on both the left and right sides that are inclined upward to the middle. The upper mold is provided with second slide grooves that match the two guide push blocks. The right side of the top wall of the two second slide grooves has a third slide groove that extends upward through the lower mold. The lower end of the upper mold is provided with two insert rods that match the third slide grooves.

[0008] The left end face of the slider used to stop the stator lamination from falling is a conical surface with a larger diameter at the top and a smaller diameter at the bottom. This conical surface is coaxial with the discharge hole.

[0009] The diameter of the upper arc of the conical surface is greater than the inner diameter of the die, and the diameter of the lower arc of the conical surface is smaller than the diameter of the die.

[0010] The lower mold has a first assembly groove at its right end that communicates with the receiving groove. A first mounting plate is detachably and fixedly connected in the first assembly groove, and the right end of the elastic element is fixedly connected to the first mounting plate.

[0011] The first mounting plate has a threaded hole that runs through the left and right sides. A screw is threaded into the threaded hole. The right end of the elastic element is fixed to the left end of the screw. The right end of the screw is provided with a screw head.

[0012] The lower mold is composed of a first mold body and a second mold body that are spliced ​​together. The splicing surface between the first mold body and the second mold body intersects with the discharge hole, the first slide groove, the receiving groove, the second slide groove and the first assembly groove.

[0013] The elastic element is an elastic rope.

[0014] The elastic element is a helical spring.

[0015] The slider of this discharge mold, which limits the loose pieces, does not require an additional power unit to drive it or any additional control. The slider can automatically discharge the loose pieces according to the number of stacked pieces, and the degree of automation is high. Attached Figure Description

[0016] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the first cross-sectional structure of the present invention;

[0019] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 This is a schematic diagram of the second cross-sectional structure of the present invention;

[0021] Figure 5 for Figure 4 Enlarged structural diagram at point B;

[0022] Figure 6 This is a schematic cross-sectional view of the lower mold of the present invention;

[0023] Figure 7for Figure 6 Enlarged schematic diagram of the structure at point C;

[0024] Figure 8 This is a schematic diagram of the slider of the present invention.

[0025] The symbols for the main components are explained below:

[0026] Upper mold 1, punch 101, lower mold 2, die 201, discharge hole 202, first slide groove 3, slider 31, insert block 32, slot 33, elastic element 34, receiving groove 341, push rod 35, guide push block 36, inclined surface 37, second slide groove 38, third slide groove 39, insert rod 4, first assembly groove 5, first mounting plate 51, screw 52, ​​first mold body 6, second mold body 61. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Example 1

[0029] like Figure 1-8 As shown, the present invention provides a die for stacking and discharging stator laminations of an electric motor core, comprising an upper die 1 and a lower die 2 that matches the upper die 1. The upper die 1 is provided with a punch 101 for punching stator laminations, and the lower die 2 is provided with a die 201 that matches the punch 101. The lower die 2 has a discharge hole 202 located below the die 201. A first sliding groove 3 is provided on the right side of the discharge hole 202, and a slider 31 for preventing stator laminations from falling out of the discharge hole 202 is installed in the first sliding groove 3.

[0030] The upper end of the slider 31 is provided with a plug 32, and the top wall of the first slide groove 3 is provided with a slot 33 that matches the plug 32. The right end of the slider 31 is fixedly connected with an elastic element 34. The right wall of the first slide groove 3 is provided with a receiving groove 341 to accommodate the elastic element 34. The right end of the elastic element 34 is connected to the right wall of the receiving groove 341. When the upper end of the slider 31 abuts against the top wall of the first slide groove 3, the right end of the elastic element 34 is higher than the left end.

[0031] Push rods 35 are provided on both the front and rear sides of the slider 31. Guide push blocks 36 are provided on both the front and rear sides of the slider 31 and are slidably connected to the lower mold 2. The guide push blocks 36 have inclined surfaces 37 on both the left and right sides that are inclined upward to the middle. The upper mold 1 has a second slide groove 38 that matches the two guide push blocks 36. The right side of the top wall of the two second slide grooves 38 has a third slide groove 39 that penetrates the lower mold 2 upward. The lower end of the upper mold 1 has two insert rods 4 that match the third slide groove 39.

[0032] When the upper mold 1 moves downward, the two insert rods 4 will be inserted into the second slide groove 38 along the third slide groove 39 and cooperate with the inclined surface 37 to push the guide push block 36 to the left. The two guide push blocks 36, together with the two push rods 35, will push the slider 31 to the left. When the upper mold 1 and the lower mold 2 are together, the insert block 32 will be pushed to be aligned with the slot 33. In this state, the insert block 32 will be inserted into the slot 33 under the pulling force of the elastic element 34 on the upper right side. Under the elastic pulling force of the elastic element 34, the right end of the insert block 32 will abut against the right wall of the slot 33. The friction between the two can keep the insert block 32 inserted into the slot 33 and prevent it from falling. At this time, the elastic pulling force applied by the elastic element 34 to the slider 31 is towards the upper right side. In this state, the left end of the slider 31 will extend into the discharge hole 202 to limit the stator lamination and prevent the stator lamination from falling out of the discharge hole 202.

[0033] When punching the sheet metal into individual pieces, the metal plate is placed on the upper side of the die 201 and the lower side of the punch 101. Then, the upper die 1 is driven to move the punch 101 downwards, allowing the punch 101 to cooperate with the die 201 to punch the metal plate into individual pieces. The formed individual pieces will fall into the discharge hole 202 and be restricted from falling by the slider 31. After repeating the punching process multiple times, multiple individual pieces will be stacked in the discharge hole 202. Since the individual pieces will exert a downward force on the slider 31 under their own weight, when the weight of the multiple individual pieces is greater than the friction between the right end of the insert 32 and the right wall of the slot 33, the upper die 1 will move downwards. During the upward movement of the upper drive rod 4, the insert block 32 will be driven by the slider 31 to slide downward until the insert block 32 slides out of the slot 33. Since the slider 31 is pulled to the right by the elastic element 34, when the insert block 32 is disengaged from the slot 33, the slider 31 will move quickly to the right under the action of the elastic force until the right end of the slider 31 abuts against the right wall of the first slide groove 3. At this time, the slider 31 will be completely retracted into the first slide groove 3, thereby allowing the loose pieces to be quickly released from the restriction. The stacked loose pieces can then be discharged from the lower side of the discharge hole 202 under the action of gravity, thus realizing automatic stacking and unloading.

[0034] During the downward movement of the upper die 1, the two insert rods 4 will be inserted into the two third slide grooves 39 respectively. Before the punch 101 enters the die 201, the loose pieces on the metal sheet have not yet been punched off. The two insert rods 4 will abut against the inclined surface 37 on the right side of the two guide push blocks 36 respectively, thereby forcing the two guide push blocks 36 to slide to the left. During the movement of the two guide push blocks 36 to the left, their left ends will abut against the two push rods 35, thereby pushing the two push rods 35 to move to the left. Since the elastic element 34 pulls to the upper right, the two push rods 35 will move to the upper side. After the insert block 32 is aligned with the slot 33, the insert block 32 will be inserted into the slot 33, thereby realizing the automatic reset of the slider 31. This can form a limit in the discharge hole 202 before the next loose piece is punched off.

[0035] As can be seen from the above, the slider of this discharge mold that limits the loose pieces does not require an additional power device to drive it or any additional control. The slider can automatically discharge the loose pieces according to the number of stacked pieces, and the degree of automation is high.

[0036] The left end face of the slider 31 used to stop the falling stator lamination is a conical surface with a larger diameter at the top and a smaller diameter at the bottom. This conical surface is coaxial with the discharge hole 202. The falling stator lamination can be easily caught by the conical surface with a larger diameter at the top and a smaller diameter at the bottom, which is coaxial with the discharge hole 202.

[0037] The upper arc diameter of the conical surface is greater than the inner diameter of the die 201, and the lower arc diameter of the conical surface is smaller than the diameter of the die 201. This ensures that when the stator laminations fall, they will only contact the end face of the slider 31, and the stator laminations will not be unable to be stacked due to being placed on the top surface of the slider 31.

[0038] Example 2

[0039] This embodiment makes further improvements based on the previous embodiment. As shown in the figure, the right end of the lower mold 2 is provided with a first assembly groove 5 that communicates with the receiving groove 341. A first mounting plate 51 is detachably and fixedly connected in the first assembly groove 5. The right end of the elastic element 34 is fixedly connected to the first mounting plate 51. The first mounting plate 51 is provided with a threaded hole that passes through from left to right. A screw 52 is threadedly connected in the threaded hole. The right end of the elastic element 34 is fixedly connected to the left end of the screw 52. The right end of the screw 52 is provided with a screw head. By rotating the screw 52 with the screw head, the left and right positions of the screw 52 can be changed. This can change the tension applied by the elastic element 34 to the slider 31, thereby adjusting the friction between the right end of the insert block 32 and the right wall of the slot 33. The increase or decrease of the friction can change the weight that the slider 31 can bear, thereby changing the number of loose pieces that can be stacked to meet the output requirements of different numbers of pieces.

[0040] The lower mold 2 is composed of a first mold body 6 and a second mold body 61 that are spliced ​​together. The splicing surface between the first mold body 6 and the second mold body 61 intersects with the discharge hole 202, the first slide groove 3, the receiving groove 341, the second slide groove 38 and the first assembly groove 5. This structure facilitates the assembly of various parts in the lower mold 2.

[0041] The elastic element 34 can be an elastic rope or a helical spring.

[0042] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A die for discharging stator laminations of an electric motor core, comprising an upper die and a lower die that matches the upper die, wherein the upper die is provided with a punch for punching stator laminations, the lower die is provided with a die that matches the punch, the lower die has a discharge hole located below the die, and a first horizontally arranged groove is provided on the right side of the discharge hole, wherein a slider for preventing stator laminations from falling out of the discharge hole is fitted in the first groove; Its features are: The upper end of the slider is provided with an insert block, and the top wall of the first slide groove is provided with a slot that matches the insert block. An elastic element is fixedly connected to the right end of the slider. The right wall of the first slide groove is provided with a receiving groove for accommodating the elastic element. The right end of the elastic element is connected to the right wall of the receiving groove. When the upper end of the slider abuts against the top wall of the first slide groove, the right end of the elastic element is higher than the left end. The slider has push rods on both its front and rear sides, and guide push blocks that slide left and right within the lower die on both its front and rear sides. Each guide push block has an inclined surface on both its left and right sides that slopes upwards towards the center. The upper die has a second sliding groove that matches the two guide push blocks. The right side of the top wall of each of the two second sliding grooves has a third sliding groove that extends upwards through the lower die. The lower end of the upper die has two insert rods that match the third sliding grooves. The left end face of the slider used to stop the stator lamination from falling is a conical surface with a larger diameter at the top and a smaller diameter at the bottom. This conical surface is coaxial with the discharge hole. The upper arc diameter of the conical surface is larger than the inner diameter of the die cavity, and the lower arc diameter is smaller than the diameter of the die cavity. The right end of the lower die has a first assembly groove communicating with the receiving groove. A first mounting plate is detachably and fixedly connected to the first assembly groove. The right end of the elastic element is fixedly connected to the first mounting plate. The first mounting plate has a threaded hole that extends left and right. A screw is threaded into the threaded hole. The right end of the elastic element is fixedly connected to the left end of the screw. The right end of the screw has a screw head.

2. The stator lamination unloading mold for motor cores according to claim 1, characterized in that: The lower mold is composed of a first mold body and a second mold body that are spliced ​​together. The splicing surface between the first mold body and the second mold body intersects with the discharge hole, the first slide groove, the receiving groove, the second slide groove and the first assembly groove.

3. A die for stacking and unloading motor core stator laminations according to any one of claims 1-2, characterized in that: The elastic element is an elastic rope.

4. A die for stacking and unloading motor core stator laminations according to any one of claims 1-2, characterized in that: The elastic element is a helical spring.

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