A slot wedge mold

Abstract

A slot wedge mold includes an upper mold and a lower mold. The upper surface of the lower mold is provided with a plurality of first grooves, and second grooves are provided on both sides of each groove. Third grooves communicating with the first grooves are further provided on both sides of the lower mold, and baffles are provided in the third grooves. The lower surface of the upper mold is provided with fourth grooves corresponding to the first grooves, and the first grooves and the fourth grooves jointly form a cavity for pressing the slot wedge. In the present invention, the cavity for pressing the slot wedge is jointly formed by the first grooves of the lower mold and the fourth grooves of the upper mold, thereby removing the punch. Therefore, the surface of the mold will not be scratched during demolding, and baffles are provided on both sides of the first grooves to ensure the size and precision of the slot wedge.

Description

Technical Field

[0001] The present invention belongs to a slot wedge forming die, and specifically relates to a slot wedge die for an electric motor. Background Art

[0002] Slot wedges are widely used in electric motors. The manufacturing of slot wedges also requires various processes. During the production of slot wedges, the die is one of the important components.

[0003] As Figure 1 shown, a conventional slot wedge die mainly includes an upper die and a lower die. The lower die is provided with a cavity, and the upper die is provided with a punch that cooperates with the cavity. The die closing, demoulding, and part taking processes of this type of slot wedge die during manufacturing and operation are relatively complex. In particular, the relevant dimensional accuracy requirements for the part where the punch and the cavity cooperate are high, the processing difficulty is large, and it is difficult to clean the die. Secondly, the slot wedge die cannot be formed in one step when pressing the slot wedge, and the length of the slot wedge needs secondary processing. The surface of the die is also easily scratched at the cooperation part between the punch and the cavity. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: to overcome the above defects and provide a slot wedge die with a simple structure, convenient operation, low cost, and ensuring the precision dimensions of the slot wedge.

[0005] The technical solution adopted by the present invention is: a slot wedge die, including an upper die and a lower die. The upper surface of the lower die is provided with a plurality of first grooves, and both sides of each groove are provided with second grooves; both sides of the lower die are also provided with third grooves communicating with the first grooves, and baffles are arranged in the third grooves; the lower surface of the upper die is provided with fourth grooves corresponding to the first grooves, and the first grooves and the fourth grooves together form a cavity for pressing the slot wedge.

[0006] In the above solution, when pressing the slot wedge, the blank is placed in the first groove, and the baffle is placed in the third groove. Then the upper die is closed. At this time, the blank is formed in the cavity jointly formed by the first groove and the fourth groove. If the blank overflows during the pressing process, the overflowed blank will flow into the second groove. Since there is no punch in the whole die, the surface of the die will not be scratched, and the setting of the baffle can ensure the size and precision of the slot wedge.

[0007] Preferably, both ends of the third groove are open, and the baffle is placed in the third groove and both ends extend out of the third groove.

[0008] The above setting facilitates the processing and cleaning of the die.

[0009] Preferably, the lower part of the side of the third groove away from the first groove is inclined to serve as a guide for the baffle.

[0010] Preferably, the height of the baffle is greater than the depth of the third groove, and the upper die is arranged between the two baffles and abuts against the baffles.

[0011] With the above arrangement, the baffle can serve as a guiding structure for placing the upper die.

[0012] Preferably, the upper surface of the lower die is further provided with positioning holes, and the lower surface of the upper die is provided with positioning posts that cooperate with the positioning holes.

[0013] Preferably, a handle is further provided on the side surface of the upper die.

[0014] The beneficial effects of the present invention are as follows: The slot wedge mold of the present invention has a short manufacturing cycle, long service life, low cost, and is small in size, light in weight, and convenient to operate; it can effectively guarantee the precision dimensions of the slot wedge, and has a higher production efficiency and lower labor intensity than conventional molds; without a convex die, the adhesive force between the upper and lower dies is small, and demolding is easy and the surface of the mold will not be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of an existing slot wedge mold;

[0016] Figure 2 is a schematic diagram of the mold of the present invention;

[0017] Figure 3 is a schematic diagram of the upper die in the present invention;

[0018] Figure 4 is Figure 1 an enlarged view of the lower surface of the upper die;

[0019] Figure 5 is a schematic diagram of the lower die in the present invention;

[0020] Figure 6 is Figure 3 an enlarged view of the upper surface of the lower die;

[0021] Figure 7 is a structural diagram of the baffle in the present invention;

[0022] Figure 8 is Figure 6 a side view of the baffle. DETAILED DESCRIPTION OF THE INVENTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] As Figures 2 to 8As shown in the figure, a slot wedge mold includes an upper mold 1 and a lower mold 2. The upper surface of the lower mold 2 is provided with a plurality of first grooves 21, and second grooves 22 are provided on both sides of each first groove 21. Third grooves 23 communicating with the first grooves 21 are also formed on both sides of the lower mold 2, and a baffle 3 is placed in the third grooves 23. The upper surface of the upper mold 1 is provided with fourth grooves 11 corresponding to the first grooves 21, and the fourth grooves 11 and the first grooves 21 together form a cavity for pressing the slot wedge.

[0025] When pressing the slot wedge, the blank for making the slot wedge is placed in the first groove 21. Since the blank may overflow during pressing, the second grooves 22 are provided on both sides of the first groove to store the overflowing blank. At the same time, in order to ensure the size and precision of the slot wedge after molding, the third grooves 23 for placing the baffle 3 are provided at both ends of the first groove 21. The height of the baffle 3 is greater than the depth of the third groove 23, so the baffle 3 can also play a guiding role.

[0026] In this embodiment, handles 13 integrally provided with the upper mold 1 are provided on both sides of the upper mold 1, and a plurality of guide posts 12 are also provided on the lower surface of the upper mold 1. Positioning holes 24 matching the guide posts 12 are formed on the upper surface of the lower mold 2. When the upper mold 1 and the lower mold 2 are closed, the guide posts 12 and the positioning holes 24 play a guiding role.

[0027] In this embodiment, the first grooves 21 and the second grooves 22 are arranged in parallel and both ends are open; both ends of the third grooves 23 and the fourth grooves 11 are open, and both ends of the baffle 3 extend out of both ends of the third grooves 23. The setting that both ends of the above four grooves are open is beneficial to the processing and cleaning of the mold.

[0028] In this embodiment, due to the requirements of the slot wedge shape, the cross-section of the first groove 21 is trapezoidal, the cross-section of the second groove 22 is semicircular, and the depth of the third groove 23 is greater than that of the first groove 21 to ensure the dimensional accuracy of both ends of the slot wedge.

[0029] In this embodiment, the lower part of the side of the third groove 23 away from the first groove is inclined to facilitate the positioning of the baffle 3. Correspondingly, the lower part of one side of the baffle 3 is also inclined.

Claims

1. A slot wedge mold, comprising an upper mold (1) and a lower mold (2), characterized in that, The upper surface of the lower die (2) is provided with a plurality of first grooves (21), and second grooves (22) for storing overflowed blanks are provided on both sides of the first grooves (21); third grooves (23) communicating with the first grooves (21) are further provided on both sides of the lower die (2), baffles (3) are arranged in the third grooves (23), the height of the baffles (3) is greater than the groove depth of the third grooves (23), the upper die (1) is arranged between the two baffles (3) and abuts against the baffles (3); a fourth groove (11) corresponding to the first groove (21) is provided on the lower surface of the upper die (1), and the first groove (21) and the fourth groove (11) jointly form a cavity for pressing the groove wedge; a positioning hole (24) is further provided on the upper surface of the lower die (2), and a positioning post (12) matched with the positioning hole (24) is provided on the lower surface of the upper die (1).

2. The slot wedge mold according to claim 1, characterized in that, Both ends of the third groove (23) are open, and the baffle (3) is placed in the third groove (23) and both ends thereof extend out of the third groove (23).

3. The grooved wedge mold according to claim 2, wherein The lower part of the side of the third groove (23) away from the first groove is inclined.

4. The slot wedge mold according to claim 1, wherein, A handle (13) is further provided on the side surface of the upper die (1).

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