Alloy femoral stem forging device with automatic heating pre-bending structure

Abstract

The utility model discloses an alloy femoral stem forging device with an automatic heating pre-bending structure. The alloy femoral stem forging device comprises a bearing base. A bearing bottom plate is fixedly arranged in the middle of the top surface of the bearing base; pre-bending mechanisms are arranged on the left side and the right side of the sliding cavity in the bearing base in a sliding manner; wherein a heating mechanism is arranged above the middle part of the bearing base; the outer ends of guide sliding plates included in the pre-bending mechanism are in threaded connection with the outer walls of the left side and the right side of a main bidirectional threaded rod, and the middles of the top faces of the guide sliding plates on the left side and the right side are fixedly connected to the middle of a pre-bending support through bolts. The alloy femoral stem forging device with the automatic heating and pre-bending structure comprises a bearing base, the alloy femoral stem forging device is matched with alloy thighbones of different specifications through a pre-bending mechanism with an adjustable range, and continuous heating is achieved through a descending electric heater in the process of pre-bending an alloy femoral stem, so that the continuous heating and pre-bending efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of alloy femoral stem forging, in particular to an alloy femoral stem forging device with an automatic heating pre-bending structure. Background Art

[0002] Alloy femur refers to the human femoral head forged by alloy metal. The femoral head is one of the largest, thickest and hardest bones in the human body. It not only connects the hip bone and the thigh bone, but also bears the weight of the body. In medicine, femoral head necrosis can be replaced by an alloy femur. The replaced alloy femur can be stored in the human body for 25-30 years and replace the original femoral head for activities. The forging of the alloy femur needs to conform to the shape of the femoral head, and then it needs to be preheated and bent before forging;

[0003] The existing alloy femur is fixed to the human bone through the handle, so the angle of the handle needs to match the angle of the human bone. The forging method is relatively rough and cannot meet the requirements of precise angle bending. At the same time, the existing heating pre-bending mechanism is inefficient during the pre-bending process due to the hard alloy material, and cannot maintain heating during the pre-bending process, which affects the precision and efficiency of the bending and processing of the alloy femoral stem.

[0004] Therefore, we propose an alloy femoral stem forging device with an automatic heating pre-bending structure to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide an alloy femoral stem forging device with an automatic heating pre-bending structure, so as to solve the problem raised in the above background technology that the current existing alloy femora are connected and fixed to the human bone through the handle head, so the angle of the handle head needs to match the angle of the human bone, and the forging method is relatively rough and cannot meet the requirements of precise angle bending. At the same time, the existing heating pre-bending mechanism is inefficient during the pre-bending process due to the relatively hard alloy material, and cannot maintain heating during the pre-bending process, which affects the precision and efficiency of the bending and processing of the alloy femoral stem.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an alloy femoral stem forging device with an automatic heating pre-bending structure, comprising a bearing base, and a sliding cavity opened inside the bearing base, and main bidirectional threaded rods are rotatably arranged on both the front and rear sides of the sliding cavity through bearings;

[0007] A bearing bottom plate is fixedly arranged in the middle of the top surface of the bearing base, and the four corners of the top surface of the bearing bottom plate are fixedly connected to the bottom end of the guide slide rod;

[0008] It also includes: pre-bending mechanisms are slidably arranged on both left and right sides of the sliding cavity inside the bearing base, and the pre-bending mechanisms include a guide slide plate and a pre-bending bracket;

[0009] Wherein, a heating mechanism is arranged above the middle of the bearing base, and the heating mechanism includes a lifting platform and a heat dissipation slot;

[0010] The right ends of the main bidirectional threaded rods on the front and rear sides of the sliding cavity are meshed and connected with each other through a sprocket mechanism, and a servo motor is fixedly arranged on the right end of the front main bidirectional threaded rod;

[0011] Among them, the outer end of the guide slide included in the pre-bending mechanism is threadedly connected to the left and right outer walls of the main bidirectional threaded rod, and the middle part of the top surface of the left and right guide slides is fixedly connected to the middle part of the pre-bending bracket by bolts, and the interior of the left and right pre-bending brackets is provided with a secondary bidirectional threaded rod for rotation through bearings.

[0012] Preferably, the pre-bending mechanism includes a pre-bending main contact head and a pre-bending auxiliary contact head, and the pre-bending main contact head is fixedly arranged at the protrusion of the pre-bending bracket, and the pre-bending auxiliary contact head is threadedly connected to the front and rear outer walls of the auxiliary bidirectional threaded rod inside the pre-bending bracket.

[0013] Preferably, the pre-bending brackets included in the pre-bending mechanism are all distributed in an inverted "T"-shaped structure, and the directions of the pre-bending brackets on the left and right sides are opposite to each other, and the pre-bending brackets on the left and right sides pre-bend the alloy femoral stem through the cooperation of the pre-bending main contact heads and the pre-bending auxiliary contact heads on the inner and outer sides, and the outer ends of the symmetrically arranged pre-bending auxiliary contact heads are all arranged to penetrate the outside of the pre-bending bracket.

[0014] Preferably, the four corners of the lifting platform included in the heating mechanism are slidably arranged on the top of the guide slide rod, and the four corners of the bottom surface of the lifting platform are fixedly connected to the top of the traction rope, and the bottom end of the traction rope is wound and connected to the left and right outer walls of the main bidirectional threaded rod, and the main bidirectional threaded rod drives the traction rope to reel in and then drives the lifting platform to move.

[0015] Preferably, the heating mechanism includes a positioning slide rod, and the positioning slide rod is symmetrically arranged on the front and rear sides of the lifting platform, and the lifting platform and the positioning slide rod are connected to each other through a reset spring, and driving gear blocks are fixedly arranged at equal distances on the lower inner side of the symmetrically arranged positioning slide rod, and driving gears are rotatably arranged on both the front and rear sides of the bottom surface of the lifting platform.

[0016] Preferably, the heating mechanism includes a driving shaft and a guide gear, and the driving shaft is fixedly arranged in the middle of the driving gear, and the guide gear is fixedly arranged on the left and right outer walls of the driving shaft on the front and rear sides, and the heating mechanism includes an electric heater, and guide racks are fixedly arranged on the left and right ends of the outer side of the electric heater.

[0017] Preferably, the electric heater included in the heating mechanism is symmetrically slidably arranged on the front and rear sides of the heat dissipation slot opened inside the lifting platform, and a closed slide is fixedly arranged on the top of the electric heater, and is driven to open and close by the engagement of the guide rack and the guide gear on the outside of the electric heater.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows: the alloy femoral stem forging device provided with an automatic heating pre-bending structure is adapted to alloy femora of different specifications through a pre-bending mechanism with an adjustable range, and continuous heating is achieved through a descending electric heater during the pre-bending of the alloy femoral stem, so as to improve the efficiency of continuous heating pre-bending. The specific contents are as follows:

[0019] 1. Unlock the pre-bent bracket that is threadedly connected to the top surface of the guide slide, and then bend the direction of the alloy femur as needed, adjust the directions of the pre-bent brackets on the left and right sides, and rotate the secondary bidirectional threaded rod inside the pre-bent bracket to drive the pre-bent secondary contact head to move according to the length of the alloy femur, so that the distance between the front and rear pre-bent secondary contact heads is less than the length of the alloy femoral stem;

[0020] Furthermore, the main bidirectional threaded rod is driven to rotate by a driving motor, so that the threaded guide slide plate and the pre-bent bracket are driven to approach the alloy femur, so that the pre-bent bracket on one side is abutted against the middle part of the alloy femur through the pre-bent main abutment head, and the pre-bent bracket on the other side is abutted against the front and back sides of the alloy femur through the pre-bent auxiliary abutment head;

[0021] 2. Through the rotation of the main bidirectional threaded rod, the wound traction rope drives the lifting platform and the electric heater to slide downward, and during the sliding process, the meshing driving gear block and the driving gear drive the guide gear and the guide rack to move, and the meshing guide rack and the electric heater are driven to move toward the inside of the lifting platform, so that in the process of merging the two electric heaters, the upper closed slide is driven to close the opened heat dissipation slot, so as to improve the efficiency of continuous heating pre-bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the utility model after the lifting platform is lowered;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the pre-bent bracket of the utility model;

[0025] Figure 4 For this utility model Figure 3The enlarged structural diagram at A in the middle;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the electric heater of the utility model;

[0027] Figure 6 For this utility model Figure 5 The enlarged structural diagram at B in the middle;

[0028] Figure 7 This is a schematic diagram of the installation structure of the pre-bent auxiliary contact head of the utility model.

[0029] In the figure: 1. load-bearing base; 2. sliding cavity; 3. main bidirectional threaded rod; 4. load-bearing bottom plate; 5. guide slide rod; 6. guide slide plate; 7. pre-bent bracket; 8. lifting platform; 9. heat dissipation slot; 10. sprocket mechanism; 11. servo motor; 12. secondary bidirectional threaded rod; 13. pre-bent main contact head; 14. pre-bent secondary contact head; 15. traction rope; 16. positioning slide rod; 17. reset spring; 18. driving gear block; 19. driving gear; 20. driving shaft; 21. guide gear; 22. electric heater; 23. guide rack; 24. closed slide plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-Figure 6 , the utility model provides the following technical solutions:

[0032] Embodiment 1: In order to solve the problem that the existing pre-bending range for alloy femurs cannot be adjusted, this embodiment adopts the following technical scheme: an alloy femoral stem forging device with an automatic heating pre-bending structure, comprising a bearing base 1, and a sliding cavity 2 opened inside the bearing base 1, and main bidirectional threaded rods 3 are rotatably arranged on both the front and rear sides of the sliding cavity 2 through bearings; wherein the right ends of the main bidirectional threaded rods 3 on the front and rear sides of the sliding cavity 2 are meshed and connected with each other through a sprocket mechanism 10, and a servo motor 11 is fixedly arranged on the right end of the front main bidirectional threaded rod 3;

[0033] Pre-bending mechanisms are slidably provided on both the left and right sides of the sliding cavity 2 inside the bearing base 1, and the pre-bending mechanism includes a guide slide 6 and a pre-bending bracket 7; wherein the outer end of the guide slide 6 included in the pre-bending mechanism is threadedly connected to the left and right outer walls of the main bidirectional threaded rod 3, and the middle of the top surface of the left and right guide slides 6 is fixedly connected to the middle of the pre-bending bracket 7 by bolts, and the inside of the left and right pre-bending brackets 7 are both rotatably provided with secondary bidirectional threaded rods 12 through bearings;

[0034] The pre-bending mechanism includes a pre-bending main contact head 13 and a pre-bending auxiliary contact head 14, and the pre-bending main contact head 13 is fixedly arranged at the protrusion of the pre-bending bracket 7, and the pre-bending auxiliary contact head 14 is threadedly connected to the front and rear outer walls of the auxiliary bidirectional threaded rod 12 inside the pre-bending bracket 7;

[0035] The pre-bending brackets 7 included in the pre-bending mechanism are all distributed in an inverted "T"-shaped structure, and the directions of the pre-bending brackets 7 on the left and right sides are arranged opposite to each other, and the pre-bending brackets 7 on the left and right sides pre-bend the alloy femoral stem through the cooperation of the pre-bending main contact heads 13 and the pre-bending auxiliary contact heads 14 on the inner and outer sides, and the outer ends of the symmetrically arranged pre-bending auxiliary contact heads 14 are all arranged to penetrate the outside of the pre-bending bracket 7;

[0036] like Figure 3-Figure 4 - Figure 7 As shown, first, the range of the pre-bending mechanism is adjusted according to the alloy femur to be pre-bent as needed. When adjusting the bending direction of the pre-bent brackets 7 on the left and right sides for the alloy femur, the pre-bent brackets 7 installed by bolts can be rotated to exchange the directions of the pre-bent main contact heads 13 and the pre-bent auxiliary contact heads 14 on the inner and outer sides. For the bending of the alloy femur, the pre-bent brackets 7 on the left and right sides need to be in opposite directions.

[0037] Furthermore, according to the length of the alloy femur, it is only necessary to manually rotate the secondary bidirectional threaded rod 12 disposed inside the pre-bent bracket 7 to drive the pre-bent secondary contact heads 14 threadedly connected to the outer walls on both sides of the front and rear sides, so that the distance between the pre-bent secondary contact heads 14 on both sides of the front and rear sides is smaller than the length of the alloy femoral stem;

[0038] like Figure 3 As shown, the alloy femur to be pre-bent is placed in the middle of the top surface of the bearing base plate 4, and then the servo motor 11 installed on the right side of the bearing base 1 is operated, thereby driving the main bidirectional threaded rod 3 meshingly connected by the sprocket mechanism 10 to rotate inside the sliding cavity 2, thereby driving the guide slide plate 6 and the pre-bending bracket 7 threadedly connected to the outer walls on the left and right sides to move, so that the pre-bending bracket 7 on one side contacts the middle part of the alloy femur through the pre-bending main contact head 13, and the pre-bending bracket 7 on the other side contacts the front and back sides of the alloy femur through the pre-bending auxiliary contact head 14.

[0039] Embodiment 2: In order to solve the problem that the existing pre-bending process for alloy femurs cannot be continuously heated, the present embodiment adopts the following technical scheme: a bearing bottom plate 4 is fixedly arranged in the middle of the top surface of the bearing base 1, and the four corners of the top surface of the bearing bottom plate 4 are fixedly connected to the bottom end of the guide slide bar 5; wherein, a heating mechanism is arranged above the middle of the bearing base 1, and the heating mechanism includes a lifting platform 8 and a heat dissipation slot 9; the four corners of the lifting platform 8 included in the heating mechanism are slidably arranged on the top of the guide slide bar 5, and the four corners of the bottom surface of the lifting platform 8 are fixedly connected to the traction rope 15 The top of the main bidirectional threaded rod 3 is provided with a traction rope 15, and the bottom end of the traction rope 15 is wound and connected to the left and right outer walls of the main bidirectional threaded rod 3, and the main bidirectional threaded rod 3 drives the traction rope 15 to reel up and then drives the lifting platform 8 to move; the heating mechanism includes a positioning slide bar 16, and the positioning slide bar 16 is symmetrically arranged on the front and rear sides of the lifting platform 8, and the lifting platform 8 and the positioning slide bar 16 are connected to each other through a return spring 17, and a driving gear block 18 is fixedly arranged at an equal distance on the inner lower side of the symmetrically arranged positioning slide bar 16, and at the same time, a driving gear 19 is rotatably arranged on both the front and rear sides of the bottom of the lifting platform 8;

[0040] The heating mechanism includes a driving shaft 20 and a guide gear 21, and the driving shaft 20 is fixedly arranged in the middle of the driving gear 19, and the guide gear 21 is fixedly arranged on the left and right outer walls of the driving shaft 20 on the front and rear sides, and the heating mechanism includes an electric heater 22, and guide racks 23 are fixedly arranged on the left and right ends of the outer side of the electric heater 22; the electric heater 22 included in the heating mechanism is symmetrically slidably arranged on the front and rear sides of the heat dissipation slot 9 opened inside the lifting platform 8, and a closed slide plate 24 is fixedly arranged on the top of the electric heater 22, and the electric heater 22 is driven to be opened and closed by the meshing of the guide rack 23 on the outer side of the electric heater 22 and the guide gear 21;

[0041] like Figure 4-Figure 5 As shown, when heating the alloy femur, the rotating main bidirectional threaded rod 3 inside the bearing base 1 drives the traction rope 15 wound on the outer walls on the left and right sides to reel in, and then the traction rope 15 drives the lifting platform 8 fixedly connected at the top to slide downward along the direction of the guide slide bar 5, so that the lifting platform 8 drives the electric heaters 22 on the front and rear sides of the bottom to approach the alloy femur;

[0042] Furthermore, during the descent of the lifting platform 8, the driving gear 19 below is meshed with the driving tooth block 18 on the inner side of the positioning slide bar 16, and the meshing of the driving tooth block 18 drives the driving gear 19 and the driving shaft 20 inside it to rotate. At the same time, the driving shaft 20 drives the guide gears 21 on the left and right sides to rotate, and then the meshing guide rack 23 and the electric heater 22 are driven to move toward the inside of the lifting platform 8, so that during the merging of the two electric heaters 22, the upper closing slide plate 24 is driven to close the opened heat dissipation slot 9, and the combined electric heater 22 is covered above the alloy femur to achieve a continuous heating effect during the pre-bending process.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An alloy femoral stem forging device with an automatic heating pre-bending structure, comprising a bearing base (1), and a sliding cavity (2) provided inside the bearing base (1), wherein main bidirectional threaded rods (3) are rotatably provided on both the front and rear sides of the sliding cavity (2) through bearings; A bearing bottom plate (4) is fixedly arranged in the middle of the top surface of the bearing base (1), and the four corners of the top surface of the bearing bottom plate (4) are fixedly connected to the bottom end of the guide slide rod (5); It is characterized in that Also includes: Pre-bending mechanisms are slidably disposed on both left and right sides of the sliding cavity (2) inside the bearing base (1), and the pre-bending mechanisms include a guide slide plate (6) and a pre-bending bracket (7); A heating mechanism is provided above the middle of the supporting base (1), and the heating mechanism includes a lifting platform (8) and a heat dissipation slot (9); The right ends of the main bidirectional threaded rods (3) on the front and rear sides of the sliding cavity (2) are meshed and connected with each other through a sprocket mechanism (10), and a servo motor (11) is fixedly arranged on the right end of the front main bidirectional threaded rod (3); The outer end of the guide slide plate (6) included in the pre-bending mechanism is threadedly connected to the left and right outer walls of the main bidirectional threaded rod (3), and the middle of the top surface of the left and right guide slide plates (6) is fixedly connected to the middle of the pre-bending bracket (7) by bolts, and the inside of the left and right pre-bending brackets (7) are both provided with secondary bidirectional threaded rods (12) rotatably arranged through bearings.

2. The alloy femoral stem forging device with an automatic heating pre-bending structure according to claim 1, characterized in that: The pre-bending mechanism comprises a pre-bending main contact head (13) and a pre-bending auxiliary contact head (14), wherein the pre-bending main contact head (13) is fixedly arranged at a protruding portion of the pre-bending bracket (7), and the pre-bending auxiliary contact head (14) is threadedly connected to the front and rear outer walls of the auxiliary bidirectional threaded rod (12) inside the pre-bending bracket (7).

3. The alloy femoral stem forging device with an automatic heating pre-bending structure according to claim 2, characterized in that: The pre-bending brackets (7) included in the pre-bending mechanism are all distributed in an inverted "T"-shaped structure, and the directions of the pre-bending brackets (7) on the left and right sides are arranged opposite to each other. The pre-bending brackets (7) on the left and right sides pre-bend the alloy femoral stem through the cooperation of the pre-bending main contact heads (13) and the pre-bending auxiliary contact heads (14) on the inner and outer sides, and the outer ends of the symmetrically arranged pre-bending auxiliary contact heads (14) are all arranged to penetrate the outside of the pre-bending bracket (7).

4. The alloy femoral stem forging device with an automatic heating pre-bending structure according to claim 1, characterized in that: The four corners of the lifting platform (8) included in the heating mechanism are slidably arranged on the top of the guide slide rod (5), and the four corners of the bottom surface of the lifting platform (8) are fixedly connected to the top of the traction rope (15), and the bottom end of the traction rope (15) is wound and connected to the left and right outer walls of the main bidirectional threaded rod (3), and the main bidirectional threaded rod (3) drives the traction rope (15) to reel up and then drives the lifting platform (8) to move.

5. The alloy femoral stem forging device with an automatic heating pre-bending structure according to claim 4, characterized in that: The heating mechanism comprises a positioning slide bar (16), and the positioning slide bar (16) is symmetrically arranged on the front and rear sides of the lifting platform (8), and the lifting platform (8) and the positioning slide bar (16) are connected to each other through a return spring (17), and a driving gear block (18) is fixedly arranged at an equal distance below the inner side of the symmetrically arranged positioning slide bar (16), and a driving gear (19) is rotatably arranged on both the front and rear sides of the bottom of the lifting platform (8).

6. The alloy femoral stem forging device with an automatic heating pre-bending structure according to claim 4, characterized in that: The heating mechanism comprises a driving shaft (20) and a guide gear (21), wherein the driving shaft (20) is fixedly arranged at the middle of the driving gear (19), and the guide gear (21) is fixedly arranged at the left and right outer walls of the driving shaft (20) at the front and rear sides, and the heating mechanism comprises an electric heater (22), and guide racks (23) are fixedly arranged at both left and right ends of the outer side of the electric heater (22).

7. The alloy femoral stem forging device with an automatic heating pre-bending structure according to claim 6, characterized in that: The heating mechanism includes an electric heater (22) which is symmetrically slidably arranged on the front and rear sides of a heat dissipation slot (9) opened inside the lifting platform (8), and a closed slide plate (24) is fixedly arranged on the top of the electric heater (22), and is driven to be opened and closed by meshing a guide rack (23) on the outside of the electric heater (22) with a guide gear (21).

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