A device for drilling holes in parts of an injection mould

Abstract

The utility model relates to a kind of part drilling device of injection mold, including bottom plate, the drilling motor being set in the top of bottom plate, chuck concentrically fixed on the rotating shaft of drilling motor, and drill bit concentrically and detachably fixed in chuck, rotating shaft of drilling motor is set to left transversely;Drilling motor and bottom plate between still being equipped with mutually matched traction mechanism and transmission mechanism;Traction mechanism includes the traction disc being connected in the bottom of bottom plate transversely and rotatably, the traction column being vertically and eccentrically fixed in the side of traction disc, and swing arm being fixed in the end of traction column;Traction mechanism further includes the seat block being fixed in the right side of bottom plate, and the first traction cylinder and the second traction cylinder being respectively distributed up and down and being transversely arranged below bottom plate;The utility model does not occupy limited equipment resources, and simultaneously simplifies operation step to improve processing efficiency and reduce artificial cost.

Description

Technical Field

[0001] This utility model relates to a drilling device for injection mold parts. Background Technology

[0002] Injection molds are tools used to produce plastic products. Molten plastic is injected into a closed mold cavity under high pressure, and after cooling and solidification, it forms a plastic product. Injection molds are assembled from multiple templates with different shapes and functions. The templates need to be assembled and move with each other through multiple parts. Some small parts need to use multiple parts with the same structure.

[0003] The production of the aforementioned small parts requires multiple identical processing steps, including drilling. Due to the identical structure of the small parts, the number of holes, the location of each hole, the inner diameter, and the depth are all the same. These small parts can be processed on fully automatic machining centers or semi-automatic drilling machines. However, due to the large number of small parts, processing them on fully automatic machining centers would occupy limited equipment resources, thus affecting the overall production progress. If processed on semi-automatic drilling machines, each hole needs to be reversed and its position calibrated after drilling, making the operation cumbersome, resulting in low processing efficiency and high labor costs, which require further improvement. Utility Model Content

[0004] In view of the current state of the prior art, the technical problem to be solved by this utility model is to provide a drilling device for injection mold parts that does not occupy limited equipment resources, simplifies the operation steps to improve processing efficiency and reduce labor costs, and is low in manufacturing cost, simple and convenient to use, and suitable for large-scale promotion.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a drilling device for injection mold parts, comprising a base plate, a drilling motor disposed on the top of the base plate, a chuck concentrically fixed on the rotating shaft of the drilling motor, and a drill bit concentrically and detachably fixed in the chuck, wherein the rotating shaft of the drilling motor is arranged laterally to the left, characterized in that: The drilling motor and the base plate are also provided with a traction mechanism and a transmission mechanism that cooperate with each other; the traction mechanism includes a traction disc that is horizontally and rotatably connected to the bottom of the base plate, a traction column that is vertically and eccentrically fixed to one side of the traction disc, and a swing arm fixed to the end of the traction column; the traction mechanism also includes a seat block fixed to the right side of the base plate, and a first traction cylinder and a second traction cylinder that are horizontally arranged below the base plate and distributed vertically and vertically respectively. The fixed ends of the first traction cylinder and the second traction cylinder are rotatably connected to the seat block. The telescopic end of the first traction cylinder is set to the left and rotatably connected to the middle of the traction column. The telescopic end of the second traction cylinder is set to the left and rotatably connected to the end of the swing arm. The transmission mechanism includes a slider movably connected to the top of the base plate for left and right translation, a vertically rotatable transmission shaft inserted into the base plate and concentrically located above the traction disc, a cover plate horizontally fixed to the base plate and located to the left of the slider, a transmission block horizontally located above the cover plate, and an elliptical block eccentrically fixed to the upper end of the transmission shaft and movably located inside the transmission block to drive the transmission block to reciprocate left and right. The lower end of the transmission shaft is concentrically fixed to the top of the traction disc, the right side of the transmission block is rotatably connected to the slider, and the drilling motor is fixed to the top of the slider.

[0006] Preferably, the bottom of the transmission block has a square cavity, the elliptical block is movably disposed in the square cavity, and each of the four corners of the square cavity has a rounded corner surface. The top left edge of the transmission block has a limiting groove that intersects with and communicates with the square cavity. The outer wall of one of the major axes of the elliptical block is in cooperation with the inner wall of the square cavity, the four rounded corner surfaces, and the opening of the limiting groove.

[0007] Preferably, a reversing disk is formed at the upper end of the drive shaft and is located between the cover plate and the bottom plate, and the elliptical block is eccentrically fixed on the top of the reversing disk.

[0008] Preferably, the cover plate is further provided with a positioning mechanism, which includes a vertical and rotatable reversing shaft inserted in the cover plate, a positioning block concentrically fixed to the upper end of the reversing shaft, and a reversing block fixed to the lower end of the reversing shaft and located between the reversing disc and the cover plate. The top of the positioning block is provided with a positioning cavity that intersects and communicates with the outer wall of the positioning block.

[0009] Preferably, an arc-shaped commutator groove assembly is formed on two of the outer walls of the commutator block that are diagonally distributed to each other, the arc-shaped commutator groove assembly including two symmetrically arranged arc-shaped commutator grooves, and an arc-shaped guide surface is formed on the other two outer walls of the commutator block that are diagonally distributed to each other.

[0010] Preferably, each of the two arc-shaped commutator slots on the commutator block is provided with a connecting notch that intersects and connects with the openings of the two arc-shaped commutator slots. Each connecting notch has an arc-shaped transition surface that is diagonally arranged on its bottom surface. Each connecting notch forms a W-shaped commutator slot with the two arc-shaped commutator slots on the same side.

[0011] Preferably, the top of the commutator also has two commutator columns arranged sequentially along the circumferential direction, and the two commutator columns cooperate with each W-shaped commutator slot.

[0012] Preferably, the top edge of the commutator is further provided with an anti-deviation protrusion, and the end edge of the anti-deviation protrusion is provided with a commutation notch located outside the two commutator columns.

[0013] Preferably, the outer periphery of the steering wheel is provided with a plurality of vertically oriented anti-deviation posts that are evenly distributed at equal angles along the circumference. The lower end of each anti-deviation post is fixed to the top outer wall of the base plate, and each anti-deviation post is slidably attached to the outer circumferential surface of the anti-deviation protrusion.

[0014] Compared with the prior art, the advantages of this utility model are as follows: This utility model can automatically complete the drilling and reversal of multiple holes in small parts without the need for a fully automatic machining center, and no manual calibration of the hole position is required after each reversal. This will not occupy limited equipment resources, and at the same time, it simplifies the operation steps to improve processing efficiency and reduce labor costs. In addition, compared with a fully automatic machining center, it has low manufacturing cost, is simple and convenient to use, and is suitable for large-scale promotion. Attached Figure Description

[0015] The above and other features, advantages, and aspects of the embodiments of this application will become more apparent when taken in conjunction with the accompanying drawings and the following detailed description; throughout the drawings, the same or similar reference numerals denote the same or similar elements; it should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale; in the drawings: Figure 1 This is a top view of the right front side of the present invention; Figure 2 This is a top-view structural diagram of the left front side of this utility model; Figure 3 This is an exploded top view of the left front side of this utility model; Figure 4 This is a top view of the left front side of the transmission block of this utility model; Figure 5 This is a top view of the left front side of the transmission shaft of this utility model; Figure 6 This is a top view of the left front side of the commutator block of this utility model. Detailed Implementation

[0016] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0017] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0018] like Figures 1-6 As shown, a part drilling device for injection mold includes a base plate 1, a drilling motor 2 disposed on the top of the base plate 1, a chuck 3 concentrically fixed on the rotating shaft of the drilling motor 2, and a drill bit 4 concentrically and detachably fixed in the chuck 3. The rotating shaft of the drilling motor 2 is arranged laterally to the left. A traction mechanism 6 and a transmission mechanism 7 are also provided between the drilling motor 2 and the base plate 1 to cooperate with each other; The traction mechanism 6 includes a traction disc 63 that is laterally and rotatably connected to the bottom of the base plate 1, a traction column 64 that is vertically and eccentrically fixed to one side of the traction disc 63, and a swing arm 65 fixed to the end of the traction column 64. The traction mechanism 6 also includes a seat block 66 fixed on the right side of the base plate 1, and a first traction cylinder 61 and a second traction cylinder 62 arranged horizontally below the base plate 1 and distributed vertically. The fixed ends of the first traction cylinder 61 and the second traction cylinder 62 are rotatably connected to the seat block 66. The telescopic end of the first traction cylinder 61 is set to the left and rotatably connected to the middle of the traction column 64. The telescopic end of the second traction cylinder 62 is set to the left and rotatably connected to the end of the swing arm 65. The transmission mechanism 7 includes a slider 71 movably connected to the top of the base plate 1 to enable left and right translation, a transmission shaft 73 vertically and rotatably inserted in the base plate 1 and concentrically located above the traction disc 63, a cover plate 75 horizontally fixed to the base plate 1 and located to the left of the slider 71, a transmission block 72 horizontally located above the cover plate 75, and an elliptical block 74 eccentrically fixed to the upper end of the transmission shaft 73 and movably located inside the transmission block 72 to drive the transmission block 72 to reciprocate left and right. The lower end of the transmission shaft 73 is concentrically fixed to the top of the traction disc 63, the right side of the transmission block 72 is rotatably connected to the slider 71, and the drilling motor 2 is fixed to the top of the slider 71.

[0019] The bottom of the transmission block 72 is provided with a square cavity 721, and the elliptical block 74 is movably disposed in the square cavity 721. A rounded corner surface 722 is formed at each of the four corners of the square cavity 721. A limiting groove 723 is provided on the top left edge of the transmission block 72, which intersects with and communicates with the square cavity 721. The outer wall of one of the major axes of the elliptical block 74 is in cooperation with the inner wall of the square cavity 721, the four rounded corner surfaces 722 and the opening of the limiting groove 723.

[0020] The upper end of the drive shaft 73 has a reversing disk 731 concentrically arranged and located between the cover plate 75 and the base plate 1, and the elliptical block 74 is eccentrically fixed on the top of the reversing disk 731.

[0021] The cover plate 75 is also provided with a positioning mechanism 5. The positioning mechanism 5 includes a vertical and rotatable reversing shaft 53 that is inserted and connected in the cover plate 75, a positioning block 51 that is concentrically fixed to the upper end of the reversing shaft 53, and a reversing block 52 that is fixed to the lower end of the reversing shaft 53 and located between the reversing disc 731 and the cover plate 75. The top of the positioning block 51 is provided with a positioning cavity 511 that intersects with and communicates with the outer wall of the positioning block 51.

[0022] An arc-shaped commutation groove assembly is formed on two of the outer walls of the commutation block 52, which are diagonally distributed to each other. The arc-shaped commutation groove assembly includes two symmetrically arranged arc-shaped commutation grooves 521. An arc-shaped guide surface 523 is formed on the other two diagonally distributed outer walls of the commutation block 52.

[0023] On the outer wall of the commutator block 52, where the two arc-shaped commutator slots are located, there is a connecting notch 524 that intersects and connects with the openings of the two arc-shaped commutator slots 521. On the bottom surface of each connecting notch 525, there is an arc-shaped transition surface 522 that is diagonally arranged. A W-shaped commutator slot 525 is formed between each connecting notch 524 and the two arc-shaped commutator slots 521 on the same side.

[0024] The top of the commutator 731 also has two commutator columns 732 arranged sequentially along the circumferential direction, and the two commutator columns 732 cooperate with each W-shaped commutator slot 525.

[0025] The top edge of the commutator 731 is also formed with an anti-deviation protrusion 733, and the end edge of the anti-deviation protrusion 733 is provided with a commutation notch 734 located outside the two commutator columns 732.

[0026] The outer periphery of the steering wheel 731 is also provided with multiple anti-deviation pillars 8 that run vertically and are evenly distributed at equal angles along the circumference. The lower end of each anti-deviation pillar 8 is fixed to the top outer wall of the base plate 1, and each anti-deviation pillar 8 slides against the outer circumferential surface of the anti-deviation convex ring 733.

[0027] Several horizontally arranged tightening screws 54 are also screwed into one side of the outer wall of the positioning block 51, and the threaded end of each tightening screw 54 extends into the interior of the positioning cavity 511.

[0028] Working principle: The part is placed into the positioning cavity 511 on the positioning block 51 and each tightening screw 54 is tightened to fix the part on the positioning block 51. Then, the extension end of the first traction cylinder 61 in the traction mechanism 6 is driven to retract inward, and the extension end of the second traction cylinder 62 is driven to extend outward. Then, the traction disc 63 is driven to rotate counterclockwise by the traction column 64 and the swing arm 65 respectively. When the traction disc 63 rotates 180 degrees, the extension end of the first traction cylinder 61 is driven to extend outward and the extension end of the second traction cylinder 62 is driven to retract inward. Then, the traction disc 63 will continue to rotate counterclockwise in the same way, so that the continuous counterclockwise rotation of the traction disc 63 can be achieved.

[0029] When the traction disc 63 rotates counterclockwise continuously, it drives the elliptical block 74 to rotate continuously and synchronously in the square cavity 721 on the transmission block 72 by means of the transmission shaft 73 in the transmission mechanism 7. Then, by means of the mutual cooperation between the outer wall of one of the major axes of the elliptical block 74, the inner wall of the square cavity 721, the four rounded corner surfaces 722, and the opening of the limiting groove 723, the transmission block 72 is forced to move back and forth left and right, and then the drilling motor 2 is driven to move back and forth left and right by means of the slider 71.

[0030] The drilling motor 2 is started to rotate its rotating shaft, which in turn drives the drill bit 4 to rotate with the help of the chuck 3. When the drilling motor 2 moves to the left, the drill bit 4 moves toward the part while rotating, thus drilling a hole in the part. At this time, the long axis end of the elliptical block 74 extends to the outside of the left side of the limiting groove 723 through the opening of the limiting groove 723, so that the transmission block 72 can remain stationary while drilling to complete the drilling smoothly. After the drilling is completed, the long axis end of the elliptical block 74 re-enters the square cavity 721 through a rounded corner surface 722 at the left rear, and then forces the transmission block 72 to start moving to the right in the same way, thereby driving the drill bit 4 to move synchronously away from the part.

[0031] It is worth mentioning that: after the drilling of the right outer wall of the part is completed and the drill bit 4 moves to the right away from the part, the rear reversing column 732 on the reversing disk 731 rotates into the opening of the W-shaped reversing groove 525 on the left side of the reversing block 52 in the positioning mechanism 5 and slides against the arc transition surface 522. As the reversing disk 731 continues to rotate, the rear reversing column 732 enters the arc reversing groove 521 in the W-shaped reversing groove 525, thereby forcing the reversing block 52 to rotate counterclockwise as well, thus driving the positioning block 51 and the part to rotate counterclockwise with the help of the reversing shaft 53; then, the front reversing column 732 moves along the front A curved guide surface 523 on the side slides to the left, which in turn exerts a force on the reversing block 52 to make it rotate counterclockwise. Then, as the reversing disk 731 continues to rotate, a rear reversing column 732 gradually emerges from the curved reversing slot 521 in which it is located and forces the reversing block 52 to continue to rotate. After that, a front reversing column 732 begins to enter the same curved reversing slot 521, and in the same way forces the reversing block 52 to continue to rotate counterclockwise. After the front reversing column 732 leaves the curved reversing slot 521, the reversing block 52 will stop rotating, thus automatically completing the reversing of the parts.

[0032] After that, the extension and retraction ends of the first traction cylinder 61 and the second traction cylinder 62 are driven to extend and retract once each. The drill bit 4 will then drill another hole on the outer wall of the other side of the part in the same way. At this time, the opening of the other W-shaped reversing groove 525 has changed from facing inward to facing outward to cooperate with the two reversing columns 732 that rotate again, thus forming a cycle.

[0033] After all the parts have been drilled, temporarily stop the movement of the extension and retraction ends of the first traction cylinder 61 and the second traction cylinder 62, and loosen each tightening screw 54 to remove the drilled parts. Then, insert a new part and repeat the above steps.

[0034] This invention can automatically complete the drilling and reversal of multiple holes in small parts without the need for a fully automated machining center. After each reversal, no manual calibration of the hole position is required, thus saving limited equipment resources. It also simplifies the operation steps to improve processing efficiency and reduce labor costs. In addition, compared with a fully automated machining center, it has lower manufacturing costs, is simple and convenient to use, and is suitable for widespread promotion.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A drilling device for injection mold parts, comprising a base plate, a drilling motor disposed on the top of the base plate, a chuck concentrically fixed on the rotating shaft of the drilling motor, and a drill bit concentrically and detachably fixed in the chuck, wherein the rotating shaft of the drilling motor is arranged laterally to the left, characterized in that: The drilling motor and the base plate are also provided with a traction mechanism and a transmission mechanism that cooperate with each other; the traction mechanism includes a traction disc that is horizontally and rotatably connected to the bottom of the base plate, a traction column that is vertically and eccentrically fixed to one side of the traction disc, and a swing arm fixed to the end of the traction column; the traction mechanism also includes a seat block fixed to the right side of the base plate, and a first traction cylinder and a second traction cylinder that are horizontally arranged below the base plate and distributed vertically and vertically respectively. The fixed ends of the first traction cylinder and the second traction cylinder are rotatably connected to the seat block. The telescopic end of the first traction cylinder is set to the left and rotatably connected to the middle of the traction column. The telescopic end of the second traction cylinder is set to the left and rotatably connected to the end of the swing arm. The transmission mechanism includes a slider movably connected to the top of the base plate for left and right translation, a vertically rotatable transmission shaft inserted into the base plate and concentrically located above the traction disc, a cover plate horizontally fixed to the base plate and located to the left of the slider, a transmission block horizontally located above the cover plate, and an elliptical block eccentrically fixed to the upper end of the transmission shaft and movably located inside the transmission block to drive the transmission block to reciprocate left and right. The lower end of the transmission shaft is concentrically fixed to the top of the traction disc, the right side of the transmission block is rotatably connected to the slider, and the drilling motor is fixed to the top of the slider.

2. The drilling device for injection mold parts according to claim 1, characterized in that, The bottom of the transmission block has a square cavity, and the elliptical block is movably disposed in the square cavity. Each of the four corners of the square cavity has a rounded corner surface. The top left edge of the transmission block has a limiting groove that intersects with and communicates with the square cavity. The outer wall of one of the major axes of the elliptical block is in cooperation with the inner wall of the square cavity, the four rounded corner surfaces, and the opening of the limiting groove.

3. The drilling device for injection mold parts according to claim 1, characterized in that, The upper end of the drive shaft has a concentrically arranged reversing disc located between the cover plate and the bottom plate, and the elliptical block is eccentrically fixed to the top of the reversing disc.

4. The drilling device for injection mold parts according to claim 3, characterized in that, The cover plate is also provided with a positioning mechanism, which includes a vertical and rotatable reversing shaft that is inserted into the cover plate, a positioning block that is concentrically fixed to the upper end of the reversing shaft, and a reversing block that is fixed to the lower end of the reversing shaft and located between the reversing disc and the cover plate. The top of the positioning block is provided with a positioning cavity that intersects and communicates with the outer wall of the positioning block.

5. A drilling device for injection mold parts according to claim 4, characterized in that, An arc-shaped commutator groove assembly is formed on two of the outer walls of the commutator block that are diagonally distributed to each other. The arc-shaped commutator groove assembly includes two symmetrically arranged arc-shaped commutator grooves. An arc-shaped guide surface is formed on the other two outer walls of the commutator block that are diagonally distributed to each other.

6. The drilling device for injection mold parts according to claim 5, characterized in that, On the outer wall of the two arc-shaped commutator slots on the commutator block, there is a connecting notch that intersects and connects with the openings of the two arc-shaped commutator slots. On the bottom surface of each connecting notch, there is an arc-shaped transition surface that is diagonally arranged. A W-shaped commutator slot is formed between each connecting notch and the two arc-shaped commutator slots on the same side.

7. A drilling device for injection mold parts according to claim 6, characterized in that, The top of the commutator also has two commutator columns arranged sequentially along the circumference, and the two commutator columns cooperate with each W-shaped commutator slot.

8. The drilling device for injection mold parts according to claim 7, characterized in that, The top edge of the commutator is also formed with an anti-deviation protrusion, and the end edge of the anti-deviation protrusion is provided with a commutation notch located outside the two commutator columns.

9. A drilling device for injection mold parts according to claim 8, characterized in that, The outer periphery of the steering wheel is provided with multiple anti-deviation posts that run vertically and are evenly distributed at equal angles along the circumference. The lower end of each anti-deviation post is fixed to the top outer wall of the base plate, and each anti-deviation post slides against the outer circumferential surface of the anti-deviation convex ring.

Images