CN216681745U

CN216681745U - Thimble grinding positioning fixture

Info

Publication number: CN216681745U
Application number: CN202220258962.7U
Authority: CN
Inventors: 倪良柱; 吕林刚; 陈亮; 刘海涛; 何汉来; 侯淙斌
Original assignee: Sichuan Ruilite Precision Mould Co ltd
Current assignee: Sichuan Ruilite Precision Mould Co ltd
Priority date: 2022-02-08
Filing date: 2022-02-08
Publication date: 2022-06-07
Anticipated expiration: 2032-02-08

Abstract

The utility model belongs to the field of clamps, and particularly relates to a thimble grinding and positioning clamp which comprises a base, wherein the top of the base is respectively provided with an operating platform and a pushing platform, a gap is reserved between the operating platform and the pushing platform, one end of the top of the pushing platform, which is far away from the operating platform, is provided with a positioning block, a push rod penetrates through the positioning block, the end part of the push rod is provided with a push plate, and one side of the push plate, which is far away from the push rod, is provided with a push block; the ejector pin grinding and positioning clamp provided by the utility model can effectively position the ejector pin and accurately control the length of the ground ejector pin.

Description

Thimble grinding positioning fixture

Technical Field

The utility model relates to the technical field of clamps, in particular to a thimble grinding and positioning clamp.

Background

When the injection molding is carried out by utilizing the mold, the injection molding piece cannot automatically fall off and is retained in the cavity due to the shape and the like after the injection molding piece is molded. Therefore, a set of ejection mechanism can be designed in the mold to eject the injection molding piece out of the cavity, so that the injection molding piece can be taken away conveniently.

Usually, the ejection mechanism comprises an ejector rod and a plurality of ejector pins arranged on the ejector rod, when the ejector plate moves, the ejector pins on the ejector plate move synchronously, and the ejector pins extend into the cavity to eject the injection molding piece out of the cavity. Due to the fact that the shapes of injection molding parts are different, ejector pins in different shapes need to be matched.

The dome pins are commonly available on the market, which requires grinding of the dome pins to the desired shape. During grinding, the dome needle needs to be positioned and fixed, so that the length of the ground section is determined. The end part of the thimble is clamped by a clamp by a commonly-adopted fixing means, so that the end part of the thimble is easy to damage, the common clamp has no positioning function, no special grinding positioning clamp aiming at the thimble exists at present to assist the grinding operation of the thimble, and particularly the positioning effect is required to be achieved.

SUMMERY OF THE UTILITY MODEL

The ejector pin grinding and positioning clamp provided by the utility model can effectively position the ejector pin and accurately control the length of the ground ejector pin.

The embodiment of the utility model is realized by the following technical scheme:

a thimble grinding positioning fixture comprises a base, wherein an operating platform and a pushing platform are respectively arranged at the top of the base, and a gap is reserved between the operating platform and the pushing platform;

the push bench is characterized in that a positioning block is arranged at one end, far away from the operating platform, of the top of the push bench, a push rod penetrates through the positioning block, a push plate is arranged at the end of the push rod, and a push block is arranged on one side, far away from the push rod, of the push plate.

Furthermore, a first locking bolt is arranged at the positioning block and matched with the push rod.

The first locking bolt serves to lock the position of the push rod so that it does not move in a mess.

Further, the number of the push rods is three, and the push rods are arranged side by side at equal intervals.

So can effectively guarantee the stability of ejector pad, make it only can the translation from beginning to end, and can not remove from side to side.

Furthermore, scales are arranged on the push rod.

The scale is used for marking the footage length of the push rod.

Furthermore, an arc-shaped groove is formed in the top of one side, close to the pushing table, of the operating table.

The rear end of the ejector pin can be partially suspended through the arrangement.

Furthermore, a positioning plate is arranged on the operating platform.

The locating plate can make the thimble can not take place the removal of horizontal direction on the operation panel.

Furthermore, a clamping hole is formed in the side face, facing the operating platform, of the push block.

So set up to make the thimble insert to the inside in centre gripping hole.

Furthermore, positioning holes are formed in two sides of the clamping hole, positioning rods are arranged in the positioning holes, and second locking bolts are arranged between one ends, located outside the push blocks, of the positioning rods and the push blocks.

So set up, the locating lever can fix the thimble effectively.

Furthermore, one end of the positioning rod, which is positioned inside the pushing block, is wedge-shaped.

The wedge structure makes the thimble insert the back, and two locating levers can the automatic separation.

Furthermore, a spring is arranged in the positioning hole, one end of the spring is fixedly installed on the inner wall of the clamping hole, the other end of the spring is fixedly installed in the middle section of the positioning rod, and the spring is in a stretching state.

The spring is used for pulling the two positioning rods to move in opposite directions, and after the ejector pin is taken out, the two positioning rods can be reset quickly.

The technical scheme of the embodiment of the utility model at least has the following advantages and beneficial effects:

according to the thimble grinding positioning fixture, the push rod is matched with the push block, so that the position of the thimble on the operating platform is fixed, and the thimble cannot move forwards or backwards when being ground by the grinding wheel, so that the positioning effect is achieved, namely the grinding length of the thimble is accurately controlled.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic structural view of an ejector pin grinding and positioning fixture provided in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of an ejector pin grinding and positioning fixture provided in embodiment 2 of the present invention;

FIG. 3 is a state diagram of the pin grinding and positioning fixture shown in FIG. 2 when the pin is not inserted into the clamping hole;

FIG. 4 is a state diagram of the ejector pin grinding and positioning fixture shown in FIG. 2 after the ejector pin is inserted into the clamping hole;

icon: 1-base, 2-pushing table, 21-positioning block, 211-first locking bolt, 22-push rod, 23-push plate, 24-push block, 241-clamping hole, 242-positioning hole, 243-positioning rod, 2431-second locking bolt, 244-spring, 3-operation table, 31-arc groove, 32-positioning plate and 4-thimble.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of this application is used, the description is merely for convenience and simplicity of description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Example 1

As shown in fig. 1, the embodiment provides an ejector pin grinding positioning fixture, which comprises a base 1, a pushing table 2 and an operating table 3 are respectively arranged at the top of the base 1, a gap is reserved between the pushing table 2 and the operating table 3, a positioning block 21 is riveted at one end of the top of the pushing table 2, which is far away from the operating table 3, three push rods 22 which are arranged in parallel and in equal distance are arranged at the positioning block 21 in a penetrating manner, scales are arranged on the push rods 22, a first locking bolt 211 is arranged at the positioning block 21, the first locking bolt 211 is matched with the push rods 22 and used for locking the push rods 22, a push plate 23 is arranged at the end of each push rod 22, a push block 24 is arranged at one side of the push plate 23, which is far away from the push rods 22, an arc-shaped groove 31 is arranged at the top of the operating table 3, which is close to one side of the pushing table 2, and a positioning plate 32 is arranged on the operating table 3.

The use method of the ejector pin grinding and positioning clamp provided by the embodiment is as follows:

the device is placed below a grinding wheel (not shown in the figure), so that an operating platform 3 is located right below the grinding wheel, a thimble 4 to be ground is placed on the operating platform 3 and tightly attached to a positioning plate 32, the rear end of the thimble 4 tightly abuts against a push block 24, then a push rod 22 is pushed, after the thimble 4 reaches a proper position, a first locking bolt 211 is screwed to lock the push rod 22, and then the grinding wheel is placed downwards for grinding.

Example 2

As shown in fig. 2 to 4, this embodiment is a modified version of embodiment 1, and the remaining features are the same as those of embodiment 1, except that the push block 24 is modified as follows:

a clamping hole 241 is formed in the side surface of the pushing block 24 facing the operating table 3, positioning holes 242 are formed in two sides of the clamping hole 241, a positioning rod 243 is arranged in each positioning hole, a second locking bolt 2431 is arranged between one end, located outside the pushing block 24, of the positioning rod 243 and the pushing block 24, one end, located inside the pushing block 24, of the positioning rod 243 is wedge-shaped, a spring 244 is arranged in each positioning hole 242, one end of the spring 244 is fixedly installed on the inner wall of the clamping hole 241, the other end of the spring 244 is fixedly installed in the middle section of the positioning rod 243, and the spring 244 is in a stretching state.

the other means are the same as those of embodiment 1, except that the thimble 4 needs to be inserted into the holding hole 241 and then tightly held by two positioning rods 243, so that the thimble 4 can be better fixed.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The ejector pin grinding and positioning clamp is characterized by comprising a base, wherein the top of the base is respectively provided with an operating platform and a pushing platform, and a gap is reserved between the operating platform and the pushing platform;

2. The ejector pin grinding and positioning clamp according to claim 1, wherein a first locking bolt is arranged at the positioning block and matched with the push rod.

3. The ejector pin grinding and positioning fixture according to claim 1, wherein the number of the push rods is three, and the push rods are arranged side by side at equal intervals.

4. The ejector pin grinding and positioning jig of claim 1, wherein a scale is provided on the push rod.

5. The ejector pin grinding and positioning fixture as claimed in claim 1, wherein an arc-shaped groove is formed in the top of the operation table on a side close to the pushing table.

6. The ejector pin grinding and positioning jig of claim 1, wherein a positioning plate is provided on the operation table.

7. The ejector pin grinding and positioning jig of claim 1, wherein a clamping hole is provided on a side surface of the push block facing the operation table.

8. The ejector pin grinding and positioning jig of claim 7, wherein positioning holes are provided on both sides of the clamping hole, positioning rods are provided in the positioning holes, and a second locking bolt is provided between an end of the positioning rod located outside the pushing block and the pushing block.

9. The ejector pin grinding and positioning clamp according to claim 8, wherein one end of the positioning rod located inside the push block is wedge-shaped.

10. The ejector pin grinding and positioning jig of claim 8, wherein a spring is provided in the positioning hole, one end of the spring is fixedly mounted on the inner wall of the clamping hole, the other end of the spring is fixedly mounted on the middle section of the positioning rod, and the spring is in a stretched state.