Blanking die for wool felt of commutator

Abstract

The blanking die comprises a die handle, an outer circle punch is installed at the lower end of the die handle, an inner circle punch is installed in a punched hole in the middle of the outer circle punch, the edge opening of the lower end of the inner circle punch is flush with the edge opening of the lower end of the outer circle punch, and the edge opening of the lower end of the inner circle punch is flush with the edge opening of the lower end of the outer circle punch. A stripping sleeve capable of axially moving is arranged between the outer side of the inner circle punch and the outer circle punch, an elastic part is installed at the upper end of the stripping sleeve, the stripping sleeve and the elastic part are arranged, after the wool felt is punched out through the outer circle punch and the inner circle punch, the wool felt can be automatically ejected out to achieve stripping, and the requirement for automatic production is met.

Description

Technical Field

[0001] The utility model relates to the technical field of commutator component production, in particular to a punching die for commutator wool felt. Background Art

[0002] Annular wool felt needs to be installed in some motor commutators, which requires punching out corresponding annular wool felt from a whole piece of wool felt. The current punching die often needs to be manually demolded when in use, which is not very safe, and the punched waste needs to be manually removed, otherwise the die will be stuck. Such a punching die cannot be operated automatically, affecting the production efficiency of the annular wool felt. Utility Model Content

[0003] The utility model provides a punching die for commutator wool felt, which can solve the problem that the existing wool felt punching die cannot meet the requirements of automated processing.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a punching die for commutator wool felt, comprising a die handle, an outer circular punch being installed at the lower end of the die handle, an inner circular punch being installed in the middle punching hole of the outer circular punch, the lower end edge of the inner circular punch being flush with the lower end edge of the outer circular punch, an axially movable stripping sleeve being provided between the outer side of the inner circular punch and the outer circular punch, an elastic part being installed at the upper end of the stripping sleeve, by arranging the stripping sleeve and the elastic part, the wool felt can be automatically ejected to realize stripping after the outer circular punch and the inner circular punch punch out the wool felt, thereby meeting the needs of automated production.

[0005] Preferably, the upper portion of the stripping sleeve is provided with a cross bar extending laterally to the outside of the outer circular punch on both sides, and the cross bar facilitates manual operation of the stripping sleeve from the outside to achieve stripping.

[0006] Preferably, the elastic member is a spring provided on both sides of the inner circular punch, the upper end of the spring is against the die handle, and the two springs can act evenly on the stripping sleeve.

[0007] Preferably, the interior of the die handle is provided with a discharge hole connected to the inner hole of the inner circle punch, and one side of the die handle is provided with a discharge window connected to the discharge hole. By setting the discharge hole and the discharge window, automatic discharge can be achieved during continuous punching of the wool felt, ensuring automatic operation.

[0008] Preferably, a locking screw arranged along the radial direction of the external cylindrical punch is installed on the side wall of the die handle, and the end of the locking screw is abutted against the outer side wall of the external cylindrical punch, which can lock the position of the external cylindrical punch and also fine-tune the position of the external cylindrical punch.

[0009] Preferably, a clamping step is provided on the outer side of the upper end of the inner circle punch, and the clamping step is interference fit with the upper part of the middle punching hole of the outer circle punch, thereby ensuring the consistency of the relative position between the clamping step and the outer circle punch.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] The structure is simple. By arranging a stripping sleeve and an elastic part, the wool felt can be automatically ejected to achieve stripping after the outer circular punch and the inner circular punch punch out the wool felt. At the same time, by arranging a discharge hole and a discharge window, automatic discharge can be achieved when the wool felt is continuously punched, ensuring that the automated operation meets the needs of automated production, and the overall installation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the main structural diagram of the utility model;

[0013] Figure 2 This is a main sectional structural diagram of the present utility model;

[0014] Figure 3 It is a side sectional structural diagram of the present utility model.

[0015] Reference numerals:

[0016] 1. Die handle, 11. Clamping step, 2. Stripping sleeve, 3. Inner round punch, 4. Elastic part, 5. Cross bar, 6. Discharge window, 7. Locking screw, 8. Outer round punch, 9. Inner hole, 10. Discharge hole. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0018] The utility model is to solve the problem that the existing wool felt punching die cannot meet the requirements of automated processing. Figure 1-3 As shown, the following technical solution is provided: a punching die for commutator wool felt, comprising a die handle 1, an outer circular punch 8 is installed at the lower end of the die handle 1, an inner circular punch 3 is installed in the middle punching hole of the outer circular punch 8, the lower end edge of the inner circular punch 3 is flush with the lower end edge of the outer circular punch 8, an axially movable stripping sleeve 2 is provided between the outer side of the inner circular punch 3 and the outer circular punch 8, an elastic part 4 is installed at the upper end of the stripping sleeve 2, and by arranging the stripping sleeve 2 and the elastic part 4, the wool felt can be automatically ejected after being punched out by the outer circular punch 8 and the inner circular punch 3 to achieve stripping, thereby meeting the needs of automated production.

[0019] Specifically, the die handle 1 includes an upper part and a lower part. The upper part is in the shape of a column handle and is used to be connected to the punching head of the press. The lower part is cylindrical and its diameter is larger than the diameter of the outer circular punch 8. The lower part of the die handle 1 is provided with an inward-concave mounting groove. The outer circular punch 8 is inserted into the mounting groove from bottom to top to realize the installation between the outer circular punch 8 and the die handle 1. The outer circular punch 8 and the inner circular punch 3 are fixedly connected. The two are installed first and then installed on the die handle 1. A clamping step 11 is provided on the outer side of the upper end of the inner circular punch 3. The clamping step 11 is interference fit with the upper part of the middle punching hole of the outer circular punch 8 to ensure the consistency of the relative position between the clamping step 11 and the outer circular punch 8.

[0020] The lower ends of the outer circle punch 8 and the inner circle punch 3 are both provided with annular sharp cutting edges, which can punch out annular wool felt by acting on the wool felt at the same time. The annular wool felt will be located in the gap between the outer circle punch 8 and the inner circle punch 3. When the die handle 1 is lifted, the stripping sleeve 2 will automatically push out the annular wool felt.

[0021] In this embodiment, if Figure 1-2 As shown, the upper part of the stripping sleeve 2 is provided with a cross bar 5 extending laterally to the outside of the outer cylindrical punch 8 on both sides. The cross bar 5 facilitates manual operation of the stripping sleeve 2 from the outside to achieve stripping. The cross bar 5 exposed to the outside also makes it convenient for the operator to observe whether the punching die is working normally.

[0022] In this embodiment, if Figure 2 As shown, the elastic member 4 is a spring arranged on both sides of the inner circle punch 3, the upper end of the spring is against the die handle 1, the two springs can act evenly on the stripping sleeve 2, the spring acts on the cross bar 5, and a limiting structure for the spring can be set inside the die handle 1.

[0023] In this embodiment, if Figure 1-3 As shown, the interior of the die handle 1 is provided with a discharge hole 10 connected to the inner hole 9 of the inner circular punch 3, and one side of the die handle 1 is provided with a discharge window 6 connected to the discharge hole 10. By setting the discharge hole 10 and the discharge window 6, automatic discharge can be achieved during continuous punching of the wool felt, ensuring automatic operation. If the discharge hole 10 is stuck by the circular waste accumulated in the inner hole 9, the waste can also be hooked out through the discharge window 6 with a tool, and the operation is very convenient.

[0024] In this embodiment, if Figure 1 and 3 As shown, a locking screw 7 arranged along the radial direction of the external cylindrical punch 8 is installed on the side wall of the die handle 1, and the end of the locking screw 7 is abutted against the outer side wall of the external cylindrical punch 8, which can lock the position of the external cylindrical punch 8 and also fine-tune the position of the external cylindrical punch 8.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0027] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

Claims

1. A punching die for commutator wool felt, characterized in that: include: A die handle (1), wherein an outer circular punch (8) is installed at the lower end of the die handle (1), an inner circular punch (3) is installed in the middle punching hole of the outer circular punch (8), the lower end edge of the inner circular punch (3) is flush with the lower end edge of the outer circular punch (8), an axially movable stripping sleeve (2) is provided between the outer side of the inner circular punch (3) and the outer circular punch (8), and an elastic member (4) is installed at the upper end of the stripping sleeve (2).

2. The punching die for commutator wool felt according to claim 1, characterized in that: The upper portion of the stripping sleeve (2) is provided with a cross bar (5) extending laterally to both sides to the outside of the outer circular punch (8).

3. The punching die for commutator wool felt according to claim 2, characterized in that: The elastic member (4) is a spring arranged on both sides of the inner circle punch (3), and the upper end of the spring is against the die handle (1).

4. The punching die for commutator wool felt according to claim 1, characterized in that: The die handle (1) is provided with a discharge hole (10) in communication with the inner hole (9) of the inner round punch (3) inside, and a discharge window (6) in communication with the discharge hole (10) is provided on one side of the die handle (1).

5. The punching die for commutator wool felt according to claim 1, characterized in that: A locking screw (7) arranged along the radial direction of the external cylindrical punch (8) is installed on the side wall of the die handle (1), and the end of the locking screw (7) abuts against the outer side wall of the external cylindrical punch (8).

6. The punching die for commutator wool felt according to claim 1, characterized in that: A clamping step (11) is provided on the outer side of the upper end of the inner circle punch (3), and the clamping step (11) is interference-fitted with the upper part of the middle punching hole of the outer circle punch (8).

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