Cutter clamping mechanism of processing machine

Abstract

A cutter clamping mechanism of a processing machine is used for clamping a cutter bar and comprises a base, a control rod and two clamping arms. Wherein the two clamping arms are pivoted with the base and can be relatively clamped or opened, and the control rod penetrates through the base and can move between a first position and a second position along an axis. When the control rod is located at the first position, the two clamping arms can stably clamp the cutter bar; and when the control rod is positioned at the second position, the control rod drives the two clamping arms to pivot and open so as to easily release the cutter bar.

Description

Technical Field

[0001] The utility model relates to the placement of a tool of a processing machine, in particular to a tool clamping mechanism of the processing machine. Background Art

[0002] In the process of realizing automated processing of known processing machines, the required equipment includes a tool changing mechanism and a tool magazine. The tool magazine is equipped with a tool sleeve or a tool clamp that can store a tool bar, and the tool bar is combined with a tool for processing. In order to properly store the tool bar and prevent the tool bar from falling off due to the arrangement or in the process of switching positions, the tool sleeve is a set of holes for the tool bar to be inserted into, and the tool bar is stabilized by a latch structure; and the tool clamp uses two clamping arms that can be clamped relative to each other to clamp the tool bar, and the two clamping arms are connected by a spring and will not be easily opened, thereby stabilizing the tool bar.

[0003] Although the above-mentioned knife sleeve or knife clamp can stabilize the knife bar, there are still areas for improvement. Taking the knife clamp as an example, its two clamp arms are firstly pivoted on a base, and then the spring is arranged between the two clamp arms, and the elastic force provided by the spring is used to keep one end of the two clamp arms in a clamping tendency. In order to ensure that the two clamp arms can effectively and firmly clamp the knife bar, a known method is to select a spring with a larger elastic coefficient to ensure the clamping force. However, this situation also makes it difficult for the two clamp arms to be opened, so that in the process of placing or taking the knife bar, a force greater than the elastic force must be applied to open the two clamp arms, which makes it easy for the knife bar to be difficult to enter and exit the clamping space of the two clamp arms, and even there is a risk of causing the knife bar to fall off improperly. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a tool clamping mechanism for a processing machine, which can firmly clamp the tool rod and achieve the purpose of loosening the tool in a labor-saving manner.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a tool clamping mechanism for a processing machine for clamping a tool bar, which includes a base, a control rod and two clamp arms. The base has an axial hole; the control rod passes through the axial hole and can move along an axis between a first position and a second position, and one end of the control rod is provided with a linkage portion; the two clamp arms are pivotally connected to the base and can be relatively clamped or opened, and the two clamp arms respectively have a linked portion; when the control rod is located at the first position, the two clamp arms can clamp the tool bar; when the control rod is located at the second position, the linkage portion of the control rod links the linked portions of the two clamp arms, so that the two clamp arms pivot and open to release the tool bar.

[0006] In one embodiment, the linkage portion of the control rod includes a connecting block and two rollers, the connecting block is connected to the control rod, and the two rollers are arranged on the connecting block and are separated by a fixed distance; the two clamping arms respectively have a groove to constitute the linked portion, wherein the two rollers are respectively located in a corresponding groove.

[0007] In one embodiment, the grooves of the two clamping arms are respectively arranged along a virtual first extension line and a second extension line, the first extension line intersects with the second extension line to form an acute angle, and the axis passes through the intersection of the first extension line and the second extension line, wherein when the control rod is in the first position, the axis divides the acute angle into two first half angles of equal angle, and when the control rod is in the second position, the axis divides the acute angle into two second half angles of equal angle, wherein the second half angle is greater than the first half angle.

[0008] In one embodiment, the first half angle is less than or equal to 45 degrees.

[0009] In one embodiment, the control rod has a screw hole arranged along the axial direction, and the connecting block has a through hole. A bolt passes through the through hole and is locked in the screw hole. The bolt fixes the connecting block to the control rod; the connecting block has a lateral groove on both sides of the through hole, and the two rollers are respectively located in each of the lateral grooves and in the grooves of the corresponding clamping arms.

[0010] In one embodiment, the tool clamping mechanism includes a chain seat, which has a connecting portion and a connected portion, and the chain seat is connected to the connected portion of an adjacent chain seat via the connecting portion; the base is detachably combined with the chain seat, and the control rod has a head located on the opposite side of the connecting portion, the control rod passes through a through hole of the chain seat, and the connecting portion and the head are located on both sides of the chain seat.

[0011] In one embodiment, the base includes a fixed block, an upper clamping plate and a lower clamping plate, the fixed block has the axial hole, the upper clamping plate and the lower clamping plate are fixed on both sides of the fixed block, and a movable space is formed between the upper clamping plate and the lower clamping plate; the part of the two clamping arms having the linked part is located in the movable space, and the two clamping arms are pivotally connected to the base through a pivot respectively passing through the upper clamping plate and the lower clamping plate.

[0012] In one embodiment, the inner edges of the two clamping arms respectively have a first positioning block and a second positioning block, the first positioning block has a first width, and the second positioning block has a second width, wherein the first width is smaller than the second width.

[0013] In one embodiment, the tool clamping mechanism includes a return member, which provides a thrust to the control rod so that the control rod maintains moving toward the first position.

[0014] In one embodiment, the control rod has a head located on the opposite side of the linkage portion; the return member includes a spring, which is sleeved on the control rod, one end of the spring abuts against the base, and the other end abuts against the head of the control rod.

[0015] The utility model has the effect that the control rod can be moved between the first position and the second position, and when moving, the two clamping arms can be linked to open or clamp, so as to achieve the purpose of releasing the knife rod in a labor-saving manner or firmly clamping the knife rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a tool clamping mechanism and a tool bar of a processing machine according to a preferred embodiment of the utility model;

[0017] Figure 2 for Figure 1 Another perspective stereogram;

[0018] Figure 3 It is a partial exploded view of the tool clamping mechanism of the processing machine of the above preferred embodiment of the utility model;

[0019] Figure 4 for Figure 3 An exploded view of some components of the tool clamping mechanism of the processing machine shown;

[0020] Figure 5 for Figure 3 A top view of some components of the tool clamping mechanism of the processing machine shown;

[0021] Figure 6 It is a cross-sectional view, revealing that the tool clamping mechanism of the processing machine is in a clamped state;

[0022] Figure 7 for Figure 6 A partial bottom view of

[0023] Figure 8 It is a simplified view used to illustrate the angle between the two clamping arms of the tool clamping mechanism of the processing machine when it is in the clamping state;

[0024] Fig. 9 It is a cross-sectional view, revealing that the tool clamping mechanism of the processing machine is in an open state;

[0025] Fig.10 It is a simplified view used to illustrate the angle between the two clamping arms of the tool clamping mechanism of the processing machine when it is in the open state.

[0026]

Explanation of symbols

[0027] 100: Tool clamping mechanism

[0028] 10: Chain seat

[0029] 11: Upright Plates

[0030] 11a: Through hole

[0031] 11b: Upper hub ear

[0032] 11c: Lower pivot ear

[0033] 11d: protruding block

[0034] 12: Horizontal Plate

[0035] 12a: Alignment hole

[0036] 12b: Countersunk hole

[0037] 13: Axis pin

[0038] 14: Roller

[0039] 15: Positioning pin

[0040] 16: Bolt

[0041] 20: Base

[0042] 21: Upper splint

[0043] 21a: Positioning hole

[0044] 21b: first screw hole

[0045] 21c: Upper perforation

[0046] 21d: Shaft perforation

[0047] 21e: Second screw hole

[0048] 22: Fixed block

[0049] 22a: Depression

[0050] 22b: shaft hole

[0051] 22c: Side perforations

[0052] 23: Lower splint

[0053] 23a: Countersunk hole

[0054] 23b: Bottom perforation

[0055] 23c: Shaft perforation

[0056] 24: Wear-resistant sleeve

[0057] 25: Limit block

[0058] 25a: Middle perforation

[0059] 25b: Arc flange

[0060] 26: Positioning pin

[0061] 27: Positioning pin

[0062] 28: Pivot

[0063] 29: Bolt

[0064] 30: Control rod

[0065] 31: Long rod

[0066] 31a: Head

[0067] 31b: screw hole

[0068] 32: Connection block

[0069] 32a:Through hole

[0070] 32b: Lateral groove

[0071] 33: Roller

[0072] 34: Bolt

[0073] 35: Pin

[0074] 40: Reply

[0075] 50: Clamp arm

[0076] 50a: Pivot hole

[0077] 52: Groove

[0078] 52a:Port

[0079] 52b: Closed end

[0080] 54: Arc inner edge

[0081] 54a: first positioning block

[0082] 56: Arc inner edge

[0083] 56a: second positioning block

[0084] 200: Tool bar

[0085] 201: Alignment slot

[0086] 202: Alignment slot

[0087] 203: Ring groove

[0088] F: Force

[0089] H: Fixed distance

[0090] L: Axis

[0091] L1: First extension line

[0092] L2: Second extension line

[0093] P1: First position

[0094] P2: Second position

[0095] W1: First width

[0096] W2: Second width

[0097] θ1: first half angle

[0098] θ2: Second half angle DETAILED DESCRIPTION

[0099] In order to more clearly illustrate the present invention, a preferred embodiment is given and described in detail with the accompanying drawings. Figures 1 to 3 As shown, a tool clamping mechanism 100 of a processing machine of a preferred embodiment of the utility model is used to clamp a tool bar 200, and the tool bar 200 has two alignment grooves 201 and 202 with unequal groove widths on a circumferential surface thereof. The tool clamping mechanism 100 includes a chain seat 10, a base 20, a control rod 30, a return member 40 and two clamping arms 50. The structural features of each component are first described below, and then the assembly and actuation methods thereof are described later.

[0100] The chain seat 10 has an L-shaped body formed by connecting a vertical plate 11 and a horizontal plate 12. The vertical plate 11 has a through hole 11a, and has a linking part and a linked part on both sides. The linking part is formed by an upper pivot ear 11b and a lower pivot ear 11c, and the linked part is a protruding block 11d. When two chain seats 10 are arranged adjacent to each other, the protruding block 11d of one chain seat 10 is located between the upper pivot ear 11b and the lower pivot ear 11c. An axle pin 13 passes through the upper pivot ear 11b, the protruding block 11d and the lower pivot ear 11c in sequence, so that the two adjacent chain seats 10 are pivotally connected to each other. When multiple chain seats 10 are connected in series, a chain belt (not shown) can be formed. In addition, the chain seat 10 is combined with multiple rollers 14, which can cooperate with a track (not shown) to enable the chain belt to move along a fixed track. The horizontal plate 12 has two alignment holes 12 a and four countersunk holes 12 b .

[0101] The base 20 is detachably connected to the chain base 10. Figure 4 and Figure 5As shown, the base 20 of this embodiment includes an upper clamping plate 21, a fixing block 22 and a lower clamping plate 23. The upper clamping plate 21 has two positioning holes 21a, four first screw holes 21b, four upper through holes 21c, two shaft through holes 21d and three second screw holes 21e; ​​the fixing block 22 has two recessed parts 22a, an shaft hole 22b and two side through holes 22c, the shaft hole 22b is located between the two recessed parts 22a and a wear-resistant sleeve 24 is arranged inside, and the two side through holes 22c are respectively located on the outside of each of the recessed parts 22a; the lower clamping plate 23 has three countersunk holes 23a, four lower through holes 23b and two shaft through holes 23c. In addition, the base 20 also includes a limit block 25, which has three middle through holes 25a and an arc flange 25b. It should be noted that the number of structural holes provided in the aforementioned components is not limited to the embodiments described above, and can be increased or decreased according to actual installation requirements.

[0102] The control rod 30 includes a long rod body 31 and a linkage portion disposed at one end of the long rod body 31. Figure 4 and Figure 6 As shown, the long rod body 31 of this embodiment has a head 31a at one end and a screw hole 31b arranged along the axial direction at the other end. The long rod body 31 passes through the wear-resistant sleeve 24 arranged in the shaft hole 22b to reduce wear. The linkage portion includes a connecting block 32 and two rollers 33, wherein the connecting block 32 has a through hole 32a, and the connecting block 32 is fixedly connected to the long rod body 31 by a bolt 34 passing through the through hole 32a and locked into the screw hole 31b. At this point, the control rod 30 can be movably combined with the fixed block 22 along an axis L. In addition, the connecting block 32 also has a lateral groove 32b on both sides of the through hole 32a, and the two rollers 33 are respectively arranged in each of the lateral grooves 32b in a rotatable manner through a pin 35, and the center distance between the two rollers 33 is a fixed distance H( Figure 8 Reference).

[0103] The restoring member 40 is a spring in this embodiment but is not limited thereto. The restoring member 40 is pre-mounted on the long rod 31 before the long rod 31 passes through the shaft hole 22b. After the long rod 31 is fixedly connected to the connecting block 32, the two ends of the restoring member 40 respectively abut against the fixing block 22 and the head 31a. The restoring member 40 provides a thrust to the control rod 30 so that the control rod 30 keeps moving outward.

[0104] The two clamping arms 50 are pivotally connected to the base 20 and can be clamped or opened relative to each other. In this embodiment, the two clamping arms 50 each have a pivot hole 50a, and a linked portion and a clamping portion are formed on both sides of the pivot hole 50a. Figure 6 and Figure 7As shown, the linked portion of each clamp arm 50 is composed of a groove 52, and the groove 52 has a port 52a and a closed end 52b; the clamping portion of each clamp arm 50 has an arc-shaped inner edge 54 and 56, respectively, and the arc-shaped inner edge 54 has a first positioning block 54a, and the arc-shaped inner edge 56 has a second positioning block 56a, wherein the first positioning block 54a has a first width W1, and the second positioning block 56a has a second width W2, and the first width W1 is smaller than the second width W2.

[0105] The above is a description of the structure of each component of the tool clamping mechanism 100 of the preferred embodiment of the present invention, and the assembly thereof will be described below.

[0106] Please cooperate Figures 4 to 6 As shown, first, the fixing block 22, the limit block 25 and the two clamping arms 50 assembled with the control rod 30 are placed between the upper clamping plate 21 and the lower clamping plate 23. Then, two positioning pins 26 are passed through the corresponding upper through hole 21c, the middle through hole 25a and the lower through hole 23b, two positioning pins 27 are passed through the corresponding upper through hole 21c, the recessed portion 22a and the lower through hole 23b, and two pivots 28 are passed through the corresponding shaft through hole 21d, the pivot hole 50a and the shaft through hole 23c, and then three bolts 29 are passed through the corresponding countersunk holes 23a from bottom to top, and one of the bolts 29 first passes through the middle through hole 25a and then is locked into the second screw hole 21e, and the other two bolts 29 pass through the two side through holes 22c and then are locked into the other two second screw holes 21e, thereby fixing the upper clamping plate 21 and the lower clamping plate 23 to the two sides of the fixing block 22, and forming a movable space between the upper clamping plate 21 and the lower clamping plate 23. At the same time, the limit block 25 is fixed between the upper clamping plate 21 and the lower clamping plate 23, and the linkage part of the control rod 30 and the part of the two clamping arms 50 having the linked part are located in the movable space, and the two rollers 33 of the linkage part are respectively located in the grooves 52 of the corresponding clamping arms 50.

[0107] For example Figure 3 and Figure 5 As shown, one end of the control rod 30 having the head 31a is passed through the through hole 11a of the chain seat 10, and at the same time, the horizontal plate 12 of the chain seat 10 is abutted against the upper clamping plate 21, and then the two ends of the two locating pins 15 are respectively inserted into the two alignment holes 12a and the corresponding locating holes 21a of the upper clamping plate 21, and then four bolts 16 are passed through each of the countersunk holes 12b and locked into the corresponding first screw holes 21b, and then the assembly of the tool clamping mechanism 100 is completed. At this time, the head and the linkage part of the control rod 30 are respectively located on both sides of the chain seat 10.

[0108] The tool clamping mechanism 100 is further described below for clamping or releasing the tool bar 200 .

[0109] Please cooperate Figure 6 As shown, it shows that the two clamping arms 50 of the tool clamping mechanism 100 are in a clamped state. At this time, the first positioning block 54a of one of the clamping arms 50 is embedded in the alignment groove 201 of the tool rod 200, and the second positioning block 56a of the other clamping arm 50 is embedded in the alignment groove 202 of the tool rod 200, and the arc flange 25b of the limit block 25 is embedded in an annular groove 203 of the tool rod 200, thereby making the tool rod 200 clamped in a predetermined swing direction and will not rotate arbitrarily. At the same time, the control rod 30 is pushed by the return member 40 and keeps moving outward, which causes the connecting block 32 to abut against the fixed block 22, and the two rollers 33 are located at each groove 52 near the end 52a. It is defined here that the control rod 30 at this moment stays at a first position P1, and a virtual first extension line L1 and a second extension line L2 are defined to pass through the center of each groove 52 and each roller 33, respectively. Figure 8 As shown, the first extension line L1 intersects with the second extension line L2 to form an acute angle, and the axis L passes through the intersection of the first extension line L1 and the second extension line L2. When the control rod 30 is located at the first position P1, the axis L divides the acute angle into two first half angles of equal angles. In the present embodiment, the first half angle is θ1 and satisfies 1≦θ1≦10. Preferably, the first half angle θ1 is 6.5 degrees.

[0110] Please cooperate Fig. 9 and Fig.10 As shown, when the knife bar 200 is to be taken out and released, a force F is applied to the control rod 30 to cause the two clamping arms 50 to pivot and open the clamping space. More specifically, when the control rod 30 is pushed by the force F to move along the axis L and compress the return member 40, since the two rollers 33 are at a fixed distance H, and the initial position is close to the port 52a of each groove 52, and each first half angle θ1 is only 6.5 degrees, when the two rollers 33 move toward the closed end 52b of each groove 52 as the control rod 30 moves, the two clamping arms 50 can be easily pushed to pivot outwards with the pivot 28 as the center, thereby opening the clamping space, and the knife bar 200 can be easily taken out for use. According to this definition, when the two clamping arms 50 are fully opened, the control rod 30 is located at a second position P2, and in this state, the angle at which the first extension line L1 and the second extension line L2 passing through each groove 52 and the center of each roller 33 intersect is still an acute angle, and the axis L divides the acute angle into two second half angles of the same angle, wherein the second half angle is larger than the first half angle. In the present embodiment, the second half angle is θ2 and satisfies 11≦θ2≦20. Preferably, the second half angle θ2 is 14.54 degrees.

[0111] From the above description, it can be known that the two clamping arms 50 are indirectly affected by the return member 40 and firmly clamp the knife bar 200 with a larger clamping force. In terms of the knife loosening design, the utility model utilizes the control rod 30 to be able to move between the first position P1 and the second position P2 along the axis L, and cooperates with the design that the first half angle θ1 of the two clamping arms 50 in the clamped state is 6.5 degrees. When the control rod 30 moves from the first position P1 to the second position P2, since the angle θ1 is close to zero, the two clamping arms 50 can be easily pushed to pivot and open the clamping space, so as to achieve the purpose of loosening the knife bar 200 in a labor-saving manner. Therefore, when the first half angle θ1 is smaller, the force F that can push the two clamping arms 50 to pivot is also smaller. On the contrary, when the force F applied to the control rod 30 is released, the restoring member 40 releases the compressed stored energy and pushes the control rod 30 back to the first position P1, so that the two clamping arms 50 return to the clamping state to be used for the next clamping.

[0112] The first half angle θ1 disclosed in the above embodiment has an angle range of 1 to 10 degrees, and the second half angle θ2 has an angle range of 11 to 20 degrees. However, it must be noted that as long as the first half angle θ1 is less than or equal to 45 degrees, the two clamping arms 50 can be pushed and pivoted, and θ1 is not limited to 1 to 10 degrees. In addition, the condition that the second half angle is greater than the first half angle makes the opening angle of each clamping arm 50 pivoting outward not limited to θ2 being between 11 and 20 degrees. For example, when the first half angle θ1 is 45 degrees, the angle of each clamping arm 50 pivoting outward can be 90 degrees, or even 150 degrees, which is set according to actual needs.

[0113] In the above embodiment, the tool clamping mechanism 100 includes the chain seat 10 and further constitutes the chain belt, so that the chain belt can become a part of a chain tool magazine. However, it should be noted that in many types of tool magazines, the tool clamping mechanism may not include the chain seat 10, but the base 20, the control rod 30, the return member 40 and the two clamping arms 50 together form a unit mechanism with labor-saving tool loosening, and the unit mechanism can be used in including but not limited to a bamboo hat-type tool magazine.

[0114] The above description is only the preferred embodiment of the present utility model. Any equivalent changes made by applying the present utility model specification and the scope of patent application should be included in the patent scope of the present utility model.

Claims

1. A tool clamping mechanism for a processing machine, used for clamping a tool bar, characterized in that: Include: A base having an axial hole; A control rod passes through the shaft hole and can move along an axis between a first position and a second position, and a linkage portion is provided at one end of the control rod; Two clamping arms are pivotally connected to the base and can be relatively clamped or opened, and the two clamping arms respectively have a linked portion; When the control rod is located at the first position, the two clamp arms can clamp the knife rod; when the control rod is located at the second position, the linkage portion of the control rod links the linked portions of the two clamp arms so that the two clamp arms pivot open to release the knife rod.

2. The tool clamping mechanism of a processing machine as claimed in claim 1, characterized in that: The linkage part of the control rod includes a connecting block and two rollers, the connecting block is connected to the control rod, and the two rollers are arranged on the connecting block and are separated by a fixed distance; the two clamping arms respectively have a groove to constitute the linked part, and the two rollers are respectively located in a corresponding groove.

3. The tool clamping mechanism of a processing machine as claimed in claim 2, characterized in that: The grooves of the two clamping arms are respectively arranged along a virtual first extension line and a second extension line, the first extension line intersects with the second extension line to form an acute angle, and the axis passes through the intersection of the first extension line and the second extension line, wherein when the control rod is in the first position, the axis divides the acute angle into two first half angles of equal angle, and when the control rod is in the second position, the axis divides the acute angle into two second half angles of equal angle, wherein the second half angle is larger than the first half angle.

4. The tool clamping mechanism of a processing machine as claimed in claim 3, characterized in that: The first half angle is less than or equal to 45 degrees.

5. The tool clamping mechanism of a processing machine as claimed in claim 2, characterized in that: The control rod has a screw hole arranged along the axial direction, the connecting block has a through hole, a bolt passes through the through hole and is locked in the screw hole, and the bolt fixes the connecting block on the control rod; the connecting block has a lateral groove on both sides of the through hole, and the two rollers are respectively located in each of the lateral grooves and in the grooves of the corresponding clamping arms.

6. The tool clamping mechanism of a processing machine as claimed in claim 1, characterized in that: The invention comprises a chain seat, which has a linking part and a linked part, and the chain seat is connected with the linked part of an adjacent chain seat via the linking part; the base is detachably combined with the chain seat, the control rod has a head located on the opposite side of the linkage part, the control rod passes through a through hole of the chain seat, and the linkage part and the head are located on both sides of the chain seat.

7. The tool clamping mechanism of a processing machine as claimed in claim 1, characterized in that: The base includes a fixed block, an upper clamping plate and a lower clamping plate, the fixed block has the axial hole, the upper clamping plate and the lower clamping plate are fixed on both sides of the fixed block, and a movable space is formed between the upper clamping plate and the lower clamping plate; the parts of the two clamping arms having the linked parts are located in the movable space, and the two clamping arms are pivotally connected to the base through a pivot respectively passing through the upper clamping plate and the lower clamping plate.

8. The tool clamping mechanism of a processing machine as claimed in claim 1, characterized in that: The inner edges of the two clamping arms respectively have a first positioning block and a second positioning block, the first positioning block has a first width, and the second positioning block has a second width, wherein the first width is smaller than the second width.

9. The tool clamping mechanism of a processing machine as claimed in claim 1, characterized in that: A return member is included, which provides a thrust to the control rod so that the control rod keeps moving toward the first position.

10. The tool clamping mechanism of a processing machine as claimed in claim 9, characterized in that: The control rod has a head located at a side opposite to the linkage part; the return member includes a spring, which is sleeved on the control rod, one end of the spring abuts against the base, and the other end abuts against the head of the control rod.

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