Automatic head changing mechanism of bridge type gantry machining center

Abstract

The automatic head changing mechanism of the bridge type gantry machining center comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with an installation base and a stand column, the upper surface of the installation base is fixedly connected with a first motor, a second motor and a disc, the surface of the disc is provided with a penetrating opening, and the output end of the first motor penetrates through the disc; the output end of the first motor is fixedly connected with a tool bit containing frame, the output end of the second motor is fixedly connected with a sliding rail, a positioning frame and a spring are arranged in the sliding rail, the left end and the right end of the spring are fixedly connected with the right surface of the positioning frame and the left surface of the sliding rail respectively, and two elastic pieces are fixedly connected in the positioning frame. An automatic telescopic rod is fixedly connected to the upper surface of the stand column, a push block and a storage box are fixedly connected to the output end of the automatic telescopic rod and the upper surface of the bottom plate correspondingly, and a profiling clamping ring is arranged in the storage box. Through the structure, the head replacement convenience is improved, and the maintenance difficulty and the maintenance cost of the head replacement mechanism are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge -type gantry head changing technical field, especially a kind of automatic head changing mechanism of bridge -type gantry machining center. BACKGROUND

[0002] Common bridge -type gantry machining center usually utilizes rotating tool magazine and mechanical arm to carry out automatic replacement work of tool head, but the overall maintenance cost of head changing mechanism is increased due to the complex structure of mechanical arm, Chinese patent network discloses "gantry machining center automatic head changing head magazine mechanism", its application number is "202222445996. X", the head changing mechanism improves the efficiency of replacing tool head by driving assembly and rotating mounting disc, but the driving mechanism of the mechanism is mainly composed of infrared signal transmission structure and electromagnet, wherein the infrared signal transmission structure is susceptible to external factors, so that the use effect of head changing mechanism is affected. SUMMARY

[0003] The utility model aims at at least solving one of the technical problems existing in prior art, provide a kind of automatic head changing mechanism of bridge -type gantry machining center, improve the convenience of replacing tool head, and save the complex transmission structure to improve the difficulty and cost of overhauling head changing mechanism, and reduce the influence of external factors on the working effect of head changing mechanism.

[0004] The utility model also provides the automatic head changing mechanism of bridge -type gantry machining center with above-mentioned one, it includes: bottom plate, the upper surface of the bottom plate is fixedly connected with mounting seat, stand, the upper surface of the mounting seat is fixedly connected with no. One motor, motor no. Two, disc, the surface of the disc is provided with the through opening, the output of the no. One motor is penetrated disc, the output of the no. One motor is fixedly connected with tool head rack, the output of the motor no. Two is fixedly connected with slide rail, the slide rail is distributed with the through opening left and right, the inside of the slide rail is provided with positioning frame, spring, the left and right ends of the spring are fixedly connected with the right surface of positioning frame, the left surface of slide rail respectively, the inside of the positioning frame is fixedly connected with two spring sheets, two the spring sheet is connected with the tool head of replacement, the upper surface of the stand is fixedly connected with automatic telescopic rod, the output of the automatic telescopic rod, the upper surface of bottom plate is fixedly connected with push block, storage box respectively, when replacing tool head, the push block is entered the inside of slide rail by the through opening, the inside of the storage box is provided with profiled snap ring, when replacing tool head, the profiled snap ring is inserted with the right end of push block.

[0005] According to the automatic head changing mechanism of bridge -type gantry machining center of the utility model, the tool head rack is composed of long plate and buckle, the buckle is fixedly connected with long plate, and the opening end of the buckle is opposite to the through opening left and right when replacing tool head. Improve the convenience of using tool head rack.

[0006] The utility model discloses an automatic head changing mechanism of bridge gantry machining center, long board is rubber material, the buckle is made of elastic material, the buckle is connected with the tool holder.

[0007] The utility model discloses an automatic head changing mechanism of bridge gantry machining center, the elastic sheet is to the downward inclination structure, and when replacing the tool holder, the opposite side of two elastic sheets is in close contact with the surface of the tool holder.

[0008] The utility model discloses an automatic head changing mechanism of bridge gantry machining center, the depth of the positioning frame is greater than the height of the push block, and when replacing the tool holder, the push block is located inside the positioning frame. Improve the convenience of profiled snap ring clamping replacement tool holder.

[0009] The utility model discloses an automatic head changing mechanism of bridge gantry machining center, the height and width of the passing opening are greater than the width and length of the push block, and when replacing the tool holder, the lower end of the push block is in contact with the lower surface of the tool holder. Improve the sliding fluency of the push block.

[0010] The utility model discloses an automatic head changing mechanism of bridge gantry machining center, the inside fixed connection of storage box has the sponge pad, and the sponge pad is in close contact with the surface of profiled snap ring. Reduce the condition of profiled snap ring shaking.

[0011] The utility model discloses an automatic head changing mechanism of bridge gantry machining center, the length of profiled snap ring is greater than the height of sponge pad, and one end of profiled snap ring and push block clamping protrudes the upper surface of sponge pad. Improve the convenience of taking profiled snap ring.

[0012] Beneficial effects:

[0013] Compared with the prior art, the automatic head changing mechanism of the bridge gantry machining center, through the installation seat, the motor, the disc, the tool holder rack, the passing opening, the automatic telescopic rod, the push block, the profiled snap ring, the spring, the positioning frame, the elastic sheet, the rotary replacement new tool holder mode is used with the structure cooperation of horizontal pushing, the convenience of machining center replacement tool holder is improved, the mechanical structure is simple and convenient to observe the working effect of the head changing mechanism, and the simple structure reduces the maintenance difficulty and maintenance cost, and reduces the influence of external factors on the effect of the head changing mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model is further illustrated below in combination with the drawings and examples;

[0015] Figure 1 It is left view structural drawing of automatic head changing mechanism of bridge gantry machining center of the utility model;

[0016] Figure 2 It is right view structure diagram of the automatic head changing mechanism of the bridge type gantry machining center of the utility model;

[0017] Figure 3 It is sectional view structure diagram of the automatic head changing mechanism of the bridge type gantry machining center of the utility model;

[0018] Figure 4 It is right view structure diagram of the automatic head changing mechanism of the bridge type gantry machining center of the utility model; Figure 3 It is enlarged structure diagram of B place in the middle.

[0019] Legend:

[0020] 1, bottom plate; 2, mounting seat; 3, stand; 4, automatic telescopic rod; 5, No. 1 motor; 6, No. 2 motor; 7, disc; 8, slide rail; 9, push block; 10, positioning frame; 11, through opening; 12, tool bit holder; 13, storage box; 14, profiling snap ring; 15, spring piece; 16, sponge pad; 17, long plate; 18, buckle; 19, spring. Specific implementation

[0021] This part will describe the specific embodiments of the utility model in detail, the preferred embodiments of the utility model are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0022] Referring to Figures 1-4 , the utility model embodiment automatic head changing mechanism of bridge type gantry machining center, it includes: bottom plate 1, the upper surface of bottom plate 1 is fixedly connected with mounting seat 2, stand 3, the upper surface of mounting seat 2 is fixedly connected with No. 1 motor 5, No. 2 motor 6, disc 7, the surface of disc 7 is provided with through opening 11, the output end of No. 1 motor 5 penetrates disc 7, the output end of No. 1 motor 5 is fixedly connected with tool bit holder 12, tool bit holder 12 is composed of long plate 17, buckle 18, buckle 18 is fixedly connected with long plate 17, when replacing tool bit, the opening end of buckle 18 is opposite to through opening 11 left and right, long plate 17 is of rubber material, buckle 18 is made of elastic material, buckle 18 is connected with tool bit, tool bit holder 12 is used for fixing unused tool bit, and the tool bit is clamped and fixed by using the characteristics of pressure deformation.

[0023] Specifically, No. 1 motor 5 drives tool bit holder 12 to rotate, and the tool bit fixed by buckle 18 passes through through opening 11 one by one in the rotating process, so as to replace the tool bit to be replaced.

[0024] The output end of the second motor 6 is fixedly connected with a sliding rail 8, the sliding rail 8 is distributed opposite to the left and right of the passing opening 11, the second motor 6 is used for rotating to change the state of the sliding rail 8, the inside of the sliding rail 8 is provided with a positioning frame 10 and a spring 19, the left and right ends of the spring 19 are fixedly connected with the right surface of the positioning frame 10 and the left surface of the sliding rail 8 respectively, the inside of the positioning frame 10 is fixedly connected with two elastic sheets 15, the two elastic sheets 15 are clamped with the replaced tool bit, the elastic sheet 15 is a downward inclined structure, when the tool bit is replaced, the opposite side of the two elastic sheets 15 is in close contact with the surface of the tool bit, the depth of the positioning frame 10 is greater than the height of the push block 9, when the tool bit is replaced, the push block 9 is located in the inside of the positioning frame 10, the positioning frame 10 is matched with the elastic sheet 15 and is used for fixing the old tool bit needing to be replaced, and the spring 19 is used for providing the automatic reset condition for the positioning frame 10.

[0025] Specifically, the second motor 6 drives the sliding rail 8 to rotate downward by 90°, and rotates the sliding rail 8 to a state parallel to the mounting seat 2, so as to avoid that the sliding rail 8 occupies too much space and affects the operation of the machining center. When the tool bit needs to be replaced, the second motor 6 rotates the sliding rail 8 in the opposite direction to reset the sliding rail 8 to the state in the drawing. At this time, the positioning frame 10 is distributed opposite to the old tool bit fixed on the leftmost machining center in the up and down direction. When the machining center lowers the height by using the lifting structure itself, the old tool bit passes through the two elastic sheets 15, and then the machining center releases the restriction on the old tool bit. At this time, the old tool bit is vertically fixed in the inside of the positioning frame 10.

[0026] The upper surface of the column 3 is fixedly connected with an automatic telescopic rod 4, the output end of the automatic telescopic rod 4 and the upper surface of the bottom plate 1 are fixedly connected with a push block 9 and a storage box 13 respectively. When the tool bit is replaced, the push block 9 enters the inside of the sliding rail 8 through the passing opening 11. The height and width of the passing opening 11 are greater than the width and length of the push block 9. When the tool bit is replaced, the lower end of the push block 9 is in contact with the lower surface of the tool bit. The inside of the storage box 13 is provided with a profiled clasp ring 14. When the tool bit is replaced, the profiled clasp ring 14 is inserted and clamped with the right end of the push block 9. The automatic telescopic rod 4, the push block 9 and the profiled clasp ring 14 are matched and used for pushing the new tool bit to the point of replacing the tool bit. The specific structure of the profiled clasp ring 14 is designed according to the shape of the tool bit and is used for clamping the old tool bit. The inside of the storage box 13 is fixedly connected with a sponge pad 16, the sponge pad 16 is in close contact with the surface of the profiled clasp ring 14, the length of the profiled clasp ring 14 is greater than the height of the sponge pad 16, one end of the profiled clasp ring 14 protruding from the upper surface of the sponge pad 16 is clamped with the push block 9, and the storage box 13 is matched with the sponge pad 16 and is used for storing the unused profiled clasp ring 14.

[0027] Specifically, the automatic telescopic rod 4 extends to drive the push block 9 to slide to the right, and the new tool head is separated from the buckle 18 while the push block 9 passes through the through opening 11. When the new tool head is separated from the buckle 18, part of the new tool head enters the inside of the profiling clasp 14. Even if the new tool head cannot completely fit the profiling clasp 14 adapted to the old tool head, the new tool head is still limited by the profiling clasp 14 to increase the stability of the new tool head during movement. After the new tool head moves to the point of replacing the tool head and is fixed to the machining center, the automatic telescopic rod 4 continues to push the push block 9 close to the positioning frame 10. In the process of the push block 9 entering the positioning frame 10, the profiling clasp 14 gradually clamps the old tool head in the vertical state, so as to integrate the old tool head with the push block 9 and move the old tool head to the tool head placing rack 12.

[0028] Working principle: the second motor 6 is used to rotate the slide rail 8 to a structure perpendicular to the gantry column. At this time, the tool head fixed to the machining center at the left end is opposite to the positioning frame 10 up and down. At this time, the height of the tool head is lowered by using the lifting structure of the tool head fixing place of the machining center, so that the lower end of the tool head fixed to the machining center passes through the two elastic sheets 15. At this time, the old tool head is limited by the tool head fixing place, and the old tool head is vertically positioned in the inside of the positioning frame 10.

[0029] After the old tool head is removed, the profiling clasp 14 capable of clamping the old tool head is selected according to the type of the old tool head, and then the profiling clasp 14 is fixed to the right end of the push block 9. At this time, the push block 9 is moved to the direction close to the positioning frame 10 by using the automatic telescopic rod 4. In this process, the new tool head opposite to the through opening 11 is carried by the push block 9. After the push block 9 pushes the positioning frame 10 and moves to the original position of the positioning frame 10, the new tool head falls to the machining center again. The tool head fixing assembly of the machining center is used to fix the new tool head. At this time, the machining center can be reset, and then the push block 9 is continuously pushed to move until the profiling clasp 14 clamps the old tool head. At this time, the old tool head is carried to the left by the push block 9. After the old tool head passes through the through opening 11, the old tool head is clamped with the buckle 18, so that the old tool head can be fixed to the tool head placing rack 12.

[0030] The embodiments of the utility model are described in detail in combination with the drawings above, but the utility model is not limited to the above-mentioned embodiments. Within the scope of knowledge possessed by ordinary skilled in the art, various changes can be made without departing from the purpose of the utility model.

Claims

1. An automatic head changing mechanism of a bridge gantry machining center, characterized in that, Include: The bottom plate (1), the upper surface of the bottom plate (1) is fixedly connected with the mounting seat (2), the column (3), the upper surface of the mounting seat is fixedly connected with the first motor (5), the second motor (6), the disc (7), the surface of the disc (7) is provided with a passing opening (11), the output end of the first motor (5) penetrates the disc (7), the output end of the first motor (5) is fixedly connected with the tool bit placing rack (12); The output end of the second motor (6) is fixedly connected with the slide rail (8), the slide rail (8) is distributed left and right with respect to the passing opening (11), the inside of the slide rail (8) is provided with a positioning frame (10), a spring (19), the left and right ends of the spring (19) are fixedly connected with the right surface of the positioning frame (10) and the left surface of the slide rail (8) respectively, the inside of the positioning frame (10) is fixedly connected with two spring sheets (15), two spring sheets (15) are clamped with the replaced tool bit; The upper surface of the column (3) is fixedly connected with the automatic telescopic rod (4), the output end of the automatic telescopic rod (4) and the upper surface of the bottom plate (1) are fixedly connected with the push block (9) and the storage box (13) respectively, when replacing the tool bit, the push block (9) enters the inside of the slide rail (8) through the passing opening (11), the inside of the storage box (13) is provided with a profiled clasp (14), when replacing the tool bit, the profiled clasp (14) is inserted and clamped with the right end of the push block (9).

2. The automatic tool changer of a bridge-type gantry machining center according to claim 1, characterized in that, The tool bit placing rack (12) is composed of a long plate (17) and a buckle (18), the buckle (18) is fixedly connected with the long plate (17), when replacing the tool bit, the opening end of the buckle (18) is opposite to the passing opening (11) left and right.

3. The automatic tool changer of a bridge-type gantry machining center according to claim 2, characterized in that, The long plate (17) is made of rubber material, the buckle (18) is made of elastic material, and the buckle (18) clamps the tool bit.

4. The automatic tool changer of a bridge-type gantry machining center according to claim 1, characterized in that, The spring sheet (15) is a downward inclined structure, when replacing the tool bit, the opposite surface of the two spring sheets (15) is in close contact with the surface of the tool bit.

5. The automatic tool changer of a bridge-type gantry machining center according to claim 1, wherein, The depth of the positioning frame (10) is greater than the height of the push block (9), when replacing the tool bit, the push block (9) is located in the inside of the positioning frame (10).

6. The automatic tool changer of a bridge-type gantry machining center according to claim 1, wherein, The height and width of the passing opening (11) are greater than the width and length of the push block (9), when replacing the tool bit, the lower end of the push block (9) is in contact with the lower surface of the tool bit.

7. The automatic tool changer of a bridge-type gantry machining center according to claim 1, wherein, The inside of the storage box (13) is fixedly connected with a sponge pad (16), the sponge pad (16) is in close contact with the surface of the profiled clasp (14).

8. The automatic tool changer of a bridge-type gantry machining center according to claim 7, characterized in that, The length of the profiled clasp (14) is greater than the height of the sponge pad (16), and the end of the profiled clasp (14) clamped with the push block (9) protrudes above the surface of the sponge pad (16).

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