TWM595007U - Improved structure of silent tool change arm - Google Patents

Abstract

This creation is an improved structure for a silent tool changer arm, which includes: a body with a center of rotation and two arm parts, two pressing units and two ejector units, wherein the ends of both arm parts have a knife buckle part, and two pressing parts The units all include a first spring and an abutment bar, which are respectively arranged in the two arm parts, and the abutment bar extends from the through holes of the two arm parts to one end of the buckle part and is provided with an abutment block, and the first spring will resist The arbor continuously pushes in the direction of the center of rotation. Both of the pin jack units include a second spring and a pin member and are respectively disposed on one end of the two arms near the center of rotation, and the second spring continuously pushes the pin member upward. , And one side of the ejector pin relative to the abutment shank is provided with a sloping surface that slopes inward from bottom to top. When the buckle operation is to be entered, the ejector pin is pressed downwards so that the abutment shank can gradually Move in the direction of the rotation center to avoid impact noise caused by the direct collision between the contact block and the tool.

Description

Improved structure of silent tool change arm

This creation relates to the field of processing machines, and in particular refers to an improved structure of a silent tool-changing arm that is applied to a tool-changing mechanism and can avoid impact noise during the tool-buckling procedure.

According to the press, the machine tool is one of the most important processing tools in the mechanical processing industry. In order to improve the working efficiency, most of the tools are replaced by automatic tool changers on the spindle of the machine tool for the next stage of processing operations. Wherein, the automatic tool changer mechanism has a tool changer arm body, the body has two arm parts, and a knife buckle part for combining tools is respectively provided at the ends of the two arm parts, and the two arm parts correspond to each knife buckle part An abutment shank is provided to press the cutter against the buckle portion to prevent it from falling.

However, as shown in FIG. 5A, the abutment bar 21 is provided with a spring 22 disposed in the two arm portions 20, and the end of the abutment bar 21 protruding from the arm portion 20 has an abutment block 211, because The spring 22 pushes the abutment rod 21 normally toward the direction of the button attachment portion (not shown), so that the abutment block 211 continuously extends into the button attachment portion, and at the same time, the two arm portions 20 Relative to the shank 21, a pin 23 is provided. Below the pin 23, another spring 24 is provided to continuously push the pin 23 upward. When the body rotates, the tool enters. The process of buckle As shown in FIG. 5B, the ejector pin 23 presses the spring 24 downward, and the cutter (not shown) directly contacts the abutment block 211 to move the abutment shank 21 inward Then, by the elastic force of the spring 22, the resisting block 211 can resist the cutter, so as to stabilize the cutter.

Since the rotation speed of the body is quite fast, the tool will hit the contact block at high speed to form noise during the process of buckling the knife, which not only affects the quality of the working environment, but also easily causes the two to wear each other, thereby affecting the machining accuracy.

In view of the above, the creator of this work has worked hard for many years to study, think and design an improved structure for silent tool changer arm, with a view to improving the lack of conventional technology, and then to promote the implementation of the industry.

The main purpose of this creation is to provide an improved structure for silent tool changer arm, which continuously pushes the abutment bar toward the center of rotation of the body through the first spring, and cooperates with the inclined surface design of the ejector pin when the tool enters the buckle part At the same time, it is possible to avoid the impact of the abutment block against the end of the cutter bar and the cutter, thereby not only reducing the noise generated during the operation, but also maintaining the original machining accuracy.

Therefore, in order to achieve the above purpose, the present invention is an improved structure for a silent tool changer arm, which includes: a body having a rotation center and two arm parts, the rotation center being located in the center of the body, and the two arm parts They respectively extend outwards from the center of rotation and are located on both sides of the body, and both ends of the two arm portions have a buckle knife portion, and the buckle knife portion has an opening and the inner edge of the buckle knife portion is connected to the buckle The combined cutter bar is matched; two pressing units, which are respectively arranged in the accommodating spaces of the two arm parts, and the two pressing units each include a first spring and a pressing bar, the first A positioning member is arranged at one end of a spring, and a hole groove is arranged on the abutment bar for the first spring to be arranged in the hole groove, and the hole grooves are arranged in pairs The recessed portion, so that both ends of the positioning member protrude from the hole slot and engage in the slot of the two arm parts, and the abutment bar extends from the through hole of the two arm parts to the knife buckle part One end is provided with an abutment block; and two ejection pin units, which are respectively disposed at the ends of the two arms close to the center of rotation, and both ejection pin units include a second spring and an ejector pin, and The second spring is disposed below the ejector pin member, and the ejector pin member is provided with an inclined surface with respect to one side of the arbor, and the inclined surface is inclined inward from bottom to top; wherein, the first spring The abutment bar is continuously pushed in the direction of the rotation center, and the second spring continuously pushes the ejector pin upward, so that the other end of the abutment bar is continuously pressed against the inclined surface.

According to the improved structure of the silent tool-changing arm described above, the opening of the accommodating space is provided on the bottom surface of the body, and a bottom cover unit is locked with respect to the opening.

According to the improved structure of the silent tool changer described above, the bottom cover unit includes a first cover body and a second cover body, the first cover system is a planar body, and the second cover system has a planar portion and a The vertical portion, and the through hole is provided in the vertical portion.

According to the improved structure of the silent tool-changing arm described above, the other end of the abutment shank further has a convex portion, and the convex portion is pressed against the inclined surface.

According to the improved structure of the silent tool-changing arm described above, the abutment bar is a circular bar body.

According to the improved structure of the silent tool-changing arm described above, the through hole is further provided with an oil seal, which is further provided for passing through the circular bar body against the tool bar.

According to the improved structure of the silent tool changer arm, a positioning hole is further provided on one side of the ejector pin, and the positioning hole is used for locking a positioning screw from the outside of the body, thereby restricting the upward and downward movement of the ejector pin Scope.

According to the improved structure of the silent tool-changing arm described above, a buffer block is further embedded on the top of the ejector pin.

According to the improved structure of the silent tool changer described above, the rotation center is combined and fixed to the drive shaft of a tool changer.

In summary, this case is not only innovative in terms of space type, but also can improve the above-mentioned multiple functions compared with conventional articles. It should have fully met the requirements of novelty and progressive legal new type patents. This new type of patent application is designed to encourage creativity and to feel virtuous.

10: Improved structure of silent tool change arm

11: Ontology

111: center of rotation

112: arm

1121: accommodating space

1122: Card slot

1123: through hole

113: Knife button

1131: opening

12: pressure unit

121: The first spring

1211: Positioning piece

122: Arrival

1221: Hole slot

1221a: Depression

1222: Arrival

1223: convex part

13: jacking unit

131: Second spring

132: top pin

1321: Bevel

1322: Positioning hole

1323: Buffer block

14: bottom cover unit

141: First cover

142: Second cover

1421: Plane Department

1422: Vertical section

15: Oil seal

16: Positioning screw

20: arm

21: Arrival

211: Arrival

23: ejector

22, 24: spring

Figure 1 is a three-dimensional schematic diagram of the improved structure of the silent tool changer.

Figure 2 is a perspective view of another perspective of the improved structure of the silent tool changer.

Figure 3 is a partially exploded view of Figure 2.

Figures 4A and 4B are schematic cross-sectional views of the modified structure of the silent tool-changing arm when it is actuated.

Figures 5A and 5B are schematic cross-sectional views of the conventional tool changer arm in the actuated state.

The embodiment of the present creation will be described below based on FIGS. 1 to 4B. This description is not intended to limit the implementation of this creation, but is one of the embodiments of the creation, and in the drawings and examples, the same or similar drawing reference numbers refer to the same, substantially the same, or Parts and components with the same function. The drawing is a simplified form, and in all embodiments, the drawing is not drawn according to precise dimensions.

First of all, please refer to Figures 1 to 3 as well, which is the improved structure 10 of the silent tool changer for this creation, which includes: a body 11 having a rotation center 111 and two arm parts 112, the rotation center 111 is located in the center of the body 11, the two arm portions 112 respectively extend outward from the rotation center 111 and are located on both sides of the body 11, and both ends of the two arm portions 112 have a knife buckle portion 113, and The knife buckle portion 113 has an opening 1131 and the inner edge of the knife buckle portion 113 is matched with a knife bar (not shown) to be fastened; two pressing units 12, the two pressing units 12 are respectively disposed in In the accommodating space 1121 of the two arm portions 112, and the two pressing units 12 each include a first spring 121 and a shank 122, one end of the first spring 121 is provided with a positioning member 1211, the shank 122 is provided with a hole 1221 for the first spring 121 to be disposed in the hole 1221, and the hole 1221 is provided with a pair of recessed portions 1221a, so that both ends of the positioning member 1211 protrudes from the hole The groove 1221 is engaged in the locking groove 1122 of the two arm parts 112, and the abutment bar 122 extends from the through holes 1123 of the two arm parts 112 to one end of the knife buckle part 113 and is provided with an abutment block 1222; And two ejection pin units 13 respectively disposed on one ends of the two arm portions 112 close to the rotation center 111, the two ejection pin units 13 both include a second spring 131 and an ejection pin member 132, and the The second spring 131 is disposed below the ejector pin member 132, and the ejector pin member 132 is provided with a slope 1321 on one side of the abutment bar 122, and the slope 1321 is inclined inward from bottom to top; wherein, the The first spring 121 continuously pushes the abutment bar 122 toward the direction of the rotation center 111, and the second spring 131 continuously pushes the ejector pin 132 upward, so that the other end of the abutment bar 122 continues to abut压于该斜面1321。 Pressed on the slope 1321. In addition, the improved structure 10 of the silent tool changer arm of the present invention is combined and fixed to the drive shaft (not shown) of a tool changer through the rotation center 111, and then combined with the tool changer.

Then, the opening of the accommodating space 1121 is set on the bottom surface of the body 11, and a bottom cover unit 14 is locked with respect to the opening, so that not only is it convenient When personnel replace the components related to the two pressure units 12, it can avoid the dust and moisture in the environment from entering from the top surface of the two arms 112, reducing the formation of dirt and sewage in the accommodating space 1121 And other problems arise. In addition, the bottom cover unit 14 includes a first cover 141 and a second cover 142, the first cover 141 is a planar body, and the second cover 142 has a planar portion 1421 and a The vertical portion 1422, and the through hole 1123 is disposed in the vertical portion 1422. In an embodiment, when the abutment bar 122 is a circular bar body, an oil seal 15 is further provided in the through hole 1123 to further allow the abutment bar 122 of the circular bar body to pass through The oil seal 15 ensures that the accommodating space 1121 achieves a sealing effect.

Furthermore, in an embodiment, the other end of the abutment bar 122 further has a convex portion 1223, and the convex portion 1223 is pressed against the inclined surface 1321.

However, a positioning hole 1322 is further provided on one side of the ejector pin 132, and the positioning hole 1322 is used for locking a positioning screw 16 from the outside of the body 11, thereby restricting the range of the upward and downward movement of the ejector pin 132 and preventing The ejector pin 132 moves left and right.

Finally, please also refer to FIGS. 4A and 4B, when the knife buckle operation is not performed, the ejector pin 132 is continuously pushed upward by the elastic force of the second spring 131, although the abutment bar 122 is subjected to the first The elastic force of the spring 121 is continuously pushed toward the rotation center 111, but since the convex portion 1223 at one end of the abutment bar 122 is resisted by the bottom of the inclined surface 1321, the abutment bar 122 can be positioned in an extended state (e.g. (Figure 4A); however, when the knife buckle operation is to be performed, the ejector pin 132 will be controlled to be pressed down to resist the elastic force of the second spring 131. At this time, since the inclined surface 1321 is from bottom to top to inward Tilt, and the abutment bar 122 is continuously pushed toward the rotation center 111 by the first spring 121, so that the abutment bar 122 can be retracted inward along the inclined surface 1321, and positioned in a retracted state (e.g. 4B (Pictured)), to ensure that a tool does not come into contact with the end of the shank 122 when entering the buckle portion 113 1222 A collision occurred. After the knife buckle operation is completed, the ejector pin 132 is pushed upward, and the bottom of the inclined surface 1321 contacts the convex portion 1223 of the abutment bar 122, so that the abutment block 1222 is pressed against the knife of the tool Rod. However, in order to reduce the impact force when the ejector pin 132 is pressed down by the tool changer, a buffer block 1323 is further embedded on the top of the ejector pin 132.

Therefore, this creation does provide an improved structure for the silent tool changer arm, which continuously pushes the abutment bar toward the center of rotation of the body through the first spring, and cooperates with the slope design of the ejector pin, when the tool enters the process of buckling the knife, it can Avoiding the impact of the abutment block against the end of the cutter bar with the cutter, thereby not only reducing the noise generated during operation, but also maintaining the original machining accuracy.

In summary, this is only the preferred and feasible embodiment of this creation, and therefore not to limit the scope of the patent of this creation. Any equivalent structural changes in the use of this creation description and the content of the drawings are equally included in this creation. Within the scope, together with Chen Ming.

10: Improved structure of silent tool change arm

112: arm

1121: accommodating space

1122: Card slot

1123: through hole

113: Knife button

1131: opening

12: pressure unit

121: The first spring

1211: Positioning piece

122: Arrival

1221: Hole slot

1221a: Depression

1222: Arrival

1223: convex part

13: jacking unit

131: Second spring

132: top pin

1321: Bevel

1322: Positioning hole

14: bottom cover unit

141: First cover

142: Second cover

1421: Plane Department

1422: Vertical section

15: Oil seal

16: Positioning screw

Claims (9)

An improved structure for silent tool change arm, including: A body having a rotation center and two arm parts, the rotation center is located in the center of the body, the two arm parts respectively extend outward from the rotation center and are located on both sides of the body, and the two arm parts Each end has a button buckle portion, and the button buckle portion has an opening and the inner edge of the button buckle portion is matched with the knife bar to be combined; Two pressing units, which are respectively disposed in the accommodating spaces of the two arm portions, and both of the pressing units include a first spring and a knife bar, and one end of the first spring is provided with a positioning The abutment bar is provided with a hole slot for the first spring to be arranged in the hole slot, and the hole slot is provided with a pair of recessed portions, so that both ends of the positioning member protrude from the hole slot And is engaged in the clamping grooves of the two arm portions, and the abutment bar extends from the through holes of the two arm portions to one end of the buckle portion and is provided with an abutment block; and Two ejector pin units respectively disposed on one end of the two arms close to the rotation center, the two ejector pin units each include a second spring and an ejector pin member, and the second spring is arranged on the ejector pin Below the part, and the jacking member is provided with an inclined surface with respect to one side of the abutment bar, and the inclined surface is inclined inward from bottom to top; Wherein, the first spring continuously pushes the abutment bar toward the rotation center, and the second spring continuously pushes the ejector pin upward, so that the other end of the abutment bar continuously presses against the Bevel. The improved structure of the silent tool changer arm as described in item 1 of the patent application scope, wherein the opening of the accommodating space is provided on the bottom surface of the body, and a bottom cover unit is locked with respect to the opening. The improved structure of the silent tool changer arm as described in item 2 of the patent application scope, wherein the bottom cover unit includes a first cover body and a second cover body, the first cover system is a planar body, and the second cover system has A flat portion and a vertical portion, and the through hole is provided in the vertical portion. The improved structure of the silent tool changer arm as described in item 1 of the patent application scope, wherein the other end of the abutment shank further has a convex portion, and the convex portion is pressed against the inclined surface. The improved structure of the silent tool changer arm described in item 1 or 4 of the patent application scope, wherein the tool abutment bar is a circular bar body. The improved structure of the silent tool-changing arm as described in item 5 of the patent application scope, wherein the through hole is further provided with an oil seal, which is further provided for passing through the round bar body against the tool bar. The improved structure of the silent tool changer arm as described in item 1 of the patent application scope, wherein a positioning hole is further provided on one side of the ejector pin, and the positioning hole is used for locking a positioning screw from the outside of the body, thereby restricting the The range of up and down movement of the jack. The improved structure of the silent tool changer arm as described in item 1 or 7 of the patent application scope, wherein a buffer block is further embedded on the top of the ejector pin. The improved structure of the silent tool changer arm as described in item 1 of the patent application scope, wherein the rotation center is combined and fixed to the drive shaft of a tool changer.

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