Needle selector convenient to position and install

Abstract

The utility model relates to the technical field of needle selectors, and discloses a needle selector convenient to position and install, which comprises a pair of inserts embedded on a frame, a plurality of tool bits and an upper cover, and the upper cover is fixed on the inserts through screws; a boss is arranged on the upper portion of the insert, and the upper cover abuts against the boss. And the mounting position of the upper cover can be positioned by arranging the boss on the insert, so that a customer can conveniently replace the tool bit, the replacement efficiency is improved, and the replacement difficulty is reduced.

Description

Technical Field

[0001] This utility model relates to the field of needle selector technology, and in particular to a needle selector that is easy to position and install. Background Technology

[0002] Existing needle selectors such as Figures 6 to 9 As shown, the device includes a pair of inserts 2 embedded in a frame 1, multiple blades 3, and a top cover 4. The top cover 4 is fixed to the inserts by screws 5. The blades are rotatably connected to the pair of inserts, and their blades are inserted into the blade slots 41 of the top cover. To avoid the rounded corners 42 inside the top cover, a certain gap H is left between the upper part of the insert and the top cover. Since the blades are consumable parts, they need to be replaced frequently. However, after replacing the blades, it is difficult for customers to restore the position of the top cover, i.e., it is difficult to guarantee the gap H. If the gap H increases, the swing angle θ of the blade in the blade slot decreases, and vice versa, thus affecting the normal operation of the needle selector. When adjusting the gap H, customers generally measure the distance h between the upper part of the top cover and the end of the frame. The distance h is generally measured using the tail of a vernier caliper or a dial indicator. If the required gap H is not met, the position of the top cover needs to be adjusted and measured multiple times, resulting in a large workload for adjustment and measurement, which affects production. Furthermore, the top cover is prone to tilting, resulting in one end being higher than the other, which further increases the difficulty of installing the top cover. Utility Model Content

[0003] The purpose of this utility model is to provide a needle selector that is easy to position and install. By setting a boss on the insert, the installation position of the upper cover can be positioned, which can facilitate customers to change the cutter head, improve the replacement efficiency, and reduce the replacement difficulty.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A needle selector for easy positioning and installation includes a pair of inserts, multiple blades, and a top cover embedded in a frame. The top cover is fixed to the inserts by screws. The upper part of the inserts is provided with a boss, and the top cover abuts against the boss.

[0006] With the above technical solution, after the cutter head is replaced, the upper cover is inserted into the cutter head and abuts against the boss, which can position the installation position of the upper cover and ensure the length of the cutter head blade extending out of the upper cover, thereby ensuring the swing angle of the blade. Then, tightening the screws can secure the upper cover to the insert, which can facilitate the replacement of the cutter head without the need for adjusting the position of the upper cover, and can greatly improve the convenience and efficiency of the cutter head replacement.

[0007] The present invention is further configured such that the number of protrusions is greater than or equal to 2.

[0008] The number of protrusions is 2.

[0009] The utility model further sets up: the number of boss is 1, and the boss is long strip shape setting.

[0010] The utility model further sets up: the length l of boss accounts for 1 / 4~1 / 2 of upper length L of insert.

[0011] The utility model further sets up: the upper portion of boss is equipped with the clearance surface, and the interference of the edge of boss and the fillet of upper cover can be prevented by setting the clearance surface, to guarantee that upper cover can be installed in place accurately.

[0012] The utility model has the prominent effect of:

[0013] Compared with prior art, by setting boss on insert, the installation position of upper cover can be positioned, the customer can replace the tool bit conveniently, the replacement efficiency is improved, and the replacement difficulty is reduced. DRAWINGS

[0014] Figure 1 It is the structural schematic diagram of the utility model;

[0015] Figure 2 It is the schematic diagram of the utility model after hiding upper cover;

[0016] Figure 3 It is the structural schematic diagram of the insert of the utility model;

[0017] Figure 4 It is the schematic diagram of other embodiments of the insert of the utility model;

[0018] Figure 5 It is the sectional view of the utility model;

[0019] Figure 6 It is the structural schematic diagram of the existing needle selector;

[0020] Figure 7 It is the front view of the existing needle selector;

[0021] Figure 8 It is Figure 7 It is the partial enlarged view about A;

[0022] Figure 9 It is Figure 7 It is the sectional view about B-B.

[0023] Signs: 1, frame; 2, insert; 3, tool bit; 4, upper cover; 5, screw;

[0024] 21, boss; 22, clearance surface; 41, tool bit clamping groove; 42, fillet. DETAILED DESCRIPTION

[0025] The specific embodiments of the utility model will be described in further detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0026] The following references Figures 1 to 5 The utility model is explained as follows: Embodiment

[0027] A convenient positioning installation's needle selector, including inlaying in a frame 1 a pair of inserts 2, a plurality of cutter heads 3 and upper cover 4, a plurality of cutter heads 3 are arranged side by side and are rotationally connected on a pair of inserts 2, the blade 31 of cutter head 3 is inserted into the cutter head clamping groove 41 of upper cover 4;Two inserts are generally symmetrically arranged and the positional accuracy is controlled by the frame die casting mold;The upper portion of insert 2 is provided with boss 21, upper cover 4 is abutted on boss 21 and is fixed on a pair of inserts 2 by a plurality of screws 5, the position of upper cover can be determined through boss 21, so that the distance of the blade extending out of the cutter head clamping groove after each tool change is guaranteed, so that the swing angle of the blade is guaranteed, and the customer can also conveniently replace the cutter head, and the installation work of the upper cover during production can also be facilitated.

[0028] The number of boss 21 of each insert 2 of the embodiment is greater than or equal to 2, and the best effect is 2, and the upper cover is abutted on the plurality of bosses during installation, which is convenient for positioning and does not occur to swing. The upper portion of the boss 21 is provided with a relief surface 22, which is used to avoid the round corner inside the upper cover 4, and the relief surface 22 can be rounded or chamfered.

[0029] The cutter head replacement steps are as follows: first, remove a plurality of screws 5;Second, remove the upper cover from the pair of inserts;Third, replace the cutter head 3;Fourth, insert the upper cover into the pair of rubber again, and when the upper cover is moved in the left-right direction, the blade is in a vertical state, and the upper cover is abutted on the bosses of the two inserts in the up-down direction, then the screws are screwed into the inserts again through the upper cover, so that the inserts and the upper cover are fixedly connected, and the cutter head replacement work is completed. Embodiment

[0030] The boss 21 of each insert 2 of the embodiment is in a strip shape and only one in number, and the upper cover 4 is abutted on the strip-shaped boss, and the boss 21 is generally arranged in the middle of the insert 2 and its length l accounts for 1 / 4-1 / 2 of the length L of the upper portion of the insert, and the other features of the needle selector of the embodiment are referred to Embodiment 1.

[0031] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary technical personnel in the technical field, without departing from the technical principles of the utility model, a number of improvements and modifications can be made, and the above-mentioned improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A needle selector for convenient positioning and installation, comprising a pair of inserts (2) inlaid on a frame (1), a plurality of cutter heads (3) and an upper cover (4), characterized in that: The upper part of the insert (2) is provided with a boss (21), and the upper cover (4) is abutted against the boss (21).

2. A conveniently positionable and mountable needle selector according to claim 1, characterized in that: The number of the boss (21) is greater than or equal to 2.

3. A conveniently positionable and mountable needle selector according to claim 2, characterized in that: The number of the boss (21) is 2.

4. The conveniently positionable needle selector of claim 1, wherein: The number of the boss (21) is 1, and the boss (21) is in the shape of a long strip.

5. A conveniently positionable and mountable needle selector according to claim 4, characterized in that: The length l of the boss (21) accounts for 1 / 4-1 / 2 of the length L of the upper part of the insert.

6. A needle selector according to any one of claims 1 to 5, wherein: The upper part of the boss (21) is provided with a relief surface (22).

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