A forming fixture for medical implantable titanium hook

Abstract

The invention discloses a forming fixture for a medical implantable titanium hook, comprising a fixture body, the fixture body comprising a fixing sleeve, a shaping convex die, a shaping concave die, a main rod, a limiting rod and a telescopic block, the fixing sleeve is provided with a mounting through hole, the mounting through hole comprises a first hole, a second hole and a third hole, the telescopic block is arranged in the first hole so as to be movable left and right, a spring is installed in the second hole, the limiting rod comprises a rod body and a rod head, the diameter of the rod head is greater than the aperture of the third hole, the rod body is fixedly connected to the right end of the telescopic block, the left end of the telescopic block is fixedly connected to the right end of the main rod, the shaping concave die is provided with a shaping hole, the shaping concave die is sleeved on the shaping convex die, a limiting groove is provided on the right end face of the shaping concave die, the shaping convex die is sleeved on the main rod, the shaping convex die comprises a die body and a shaping block, a forming convex portion of a circular arc structure is provided on the right end face of the shaping block, and a forming groove is provided on the left end head of the telescopic block. The invention can realize the forming of the titanium hook and has the characteristics of good forming quality.

Description

Technical Field

[0001] The invention relates to the technical field of forming fixtures, in particular to a forming fixture for a medical implantable titanium hook. Background Art

[0002] Titanium alloys are widely used in medicine because of their light weight, low elastic modulus, non-magnetic, non-toxic, corrosion-resistant, high strength and good toughness. Figure 1 The figure shows a schematic diagram of the structure of a medical implantable titanium hook, which needs to be bent and formed during production. However, the existing medical implantable titanium hook is a memory titanium alloy, and is prone to rebound after being formed using an ordinary forming fixture, which results in poor dimensional stability of the formed titanium hook and low forming quality, which urgently needs to be solved. Summary of the invention

[0003] The purpose of the present invention is to provide a molding fixture for a medical implantable titanium hook in order to solve the problem of poor molding quality of the existing molding fixture for medical implantable titanium hook.

[0004] The purpose of the present invention is to be achieved through the following technical solutions:

[0005] A forming fixture for a medical implantable titanium hook comprises a fixture body, wherein the fixture body comprises a fixing sleeve, a shaping punch, a shaping die, a main rod, a limiting rod and a telescopic block, wherein the fixing sleeve is provided with a mounting through hole along its axial direction, wherein the axial direction of the fixing sleeve is defined as a left-right direction, wherein the mounting through hole comprises a first hole, a second hole and a third hole which are sequentially arranged and connected from left to right, wherein the telescopic block is arranged in the first hole so as to be movable left and right, wherein the aperture of the second hole is smaller than the aperture of the first hole so as to form a first step at the connection between the first hole and the second hole, wherein the aperture of the second hole is larger than the aperture of the third hole so as to form a second step at the connection between the second hole and the third hole, and wherein a spring is installed in the second hole, wherein the left end of the spring abuts against the telescopic block, and the right end of the spring abuts against the On the second step, the limiting rod includes a rod body and a rod head, the diameter of the rod head is larger than the aperture of the third hole, the rod body passes through the third hole and the second hole and then extends into the first hole to be fixedly connected to the right end of the telescopic block, the left end of the telescopic block is fixedly connected to the right end of the main rod, the shaping die is provided with a shaping hole, and the shaping die is sleeved on the shaping punch and locked and fixed by a locking ring, a limiting groove is provided on the right end face of the shaping die, the shaping punch is sleeved on the main rod, and the shaping punch includes a mold body and a shaping block matching the shaping hole, the shaping block is connected to the right end of the mold body, a forming convex portion with an arc-shaped structure is provided on the right end face of the shaping block, and a forming groove matching the forming convex portion is provided on the left end head of the telescopic block.

[0006] As a preferred solution of the present invention, an external thread is arranged on the outer wall of the mold body, a locking hole is opened in the locking ring, and an internal thread matching with the external thread is arranged on the hole wall of the locking hole.

[0007] As a preferred solution of the present invention, the fixing sleeve is provided with a fixing threaded hole along the radial direction of the fixing sleeve, and is threadedly connected with a fixing bolt for fixing the position of the telescopic block, the fixing threaded hole is connected to the first hole, and a fixing groove is provided on the outer wall of the telescopic block, and when the telescopic block is in a fixed state, the fixing bolt is pressed against the bottom of the fixing groove of the telescopic block.

[0008] As a preferred solution of the present invention, the left end of the main rod is provided with a guide head for facilitating the insertion of parts.

[0009] As a preferred solution of the present invention, the guide head is a conical structure.

[0010] As a preferred solution of the present invention, the mold body and the shaping block are an integral structure.

[0011] The beneficial effects of the present invention are that the molding fixture of the medical implantable titanium hook can realize the molding of the titanium hook, has the characteristics of good molding quality, simple structure and easy realization. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the structure of a titanium hook;

[0013] Figure 2 The figure is a schematic diagram of the structure of a forming fixture for a medical implantable titanium hook;

[0014] Figure 3 It is a structural schematic diagram of the shaping punch;

[0015] Figure 4 It is the main view of the shaping die;

[0016] Figure 5 It is the right view of the shaping die;

[0017] Figure 6 It is a structural schematic diagram of the telescopic block. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and through specific implementation methods. It should be understood that the embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0019] Please refer to Figures 2 to 6 As shown, Figure 2 The figure is a schematic diagram of the structure of a forming fixture for a medical implantable titanium hook; Figure 3It is a structural schematic diagram of the shaping punch; Figure 4 It is the main view of the shaping die; Figure 5 It is the right view of the shaping die; Figure 6 It is a structural schematic diagram of the telescopic block.

[0020] In the present embodiment, a forming fixture for a medical implantable titanium hook comprises a fixture body, wherein the fixture body comprises a fixing sleeve 4, a shaping punch 2, a shaping die 3, a main rod 6, a limiting rod 7 and a telescopic block 5, wherein the fixing sleeve 4 is provided with a mounting through hole along its axial direction, wherein the axial direction of the fixing sleeve 4 is defined as the left-right direction, wherein the mounting through hole comprises a first hole, a second hole and a third hole which are sequentially arranged and connected from left to right, wherein the telescopic block 5 is arranged in the first hole so as to be movable left and right, wherein the aperture of the second hole is smaller than the aperture of the first hole so as to form a first step at the connection between the first hole and the second hole, wherein the aperture of the second hole is larger than the aperture of the third hole so as to form a second step at the connection between the second hole and the third hole, and wherein a spring 8 is installed in the second hole, wherein the left end of the spring 8 abuts against the telescopic block 5, and the right end of the spring 8 abuts against the second step, and the limiting rod 7 comprises a rod The rod body and the rod head, the diameter of the rod head is larger than the aperture of the third hole, the rod body passes through the third hole and the second hole and then extends into the first hole to be threadedly fixedly connected with the right end of the telescopic block 5, the left end of the telescopic block 5 is threadedly fixedly connected with the right end of the main rod 6, the shaping die 3 is provided with a shaping hole 14, and the shaping die 3 is sleeved on the shaping convex die 2 and is locked and fixed by a locking ring 1, and 4 limit grooves are provided on the right end surface of the shaping die 3 15, four limiting grooves 15 are evenly distributed along the circumferential direction, the shaping punch 2 is sleeved on the main rod 6, and the shaping punch 2 includes a mold body 11, a shaping block 12 matched with the shaping hole 14, the shaping block 12 is connected to the right end of the mold body 11, and a forming convex portion 13 with an arc-shaped structure is arranged on the right end face of the shaping block 12, and a forming groove 16 matched with the forming convex portion 13 is opened at the left end of the telescopic block 5.

[0021] In this embodiment, an external thread is provided on the outer wall of the mold body 11, a locking hole is opened in the locking ring 1, and an internal thread matching the external thread is provided on the hole wall of the locking hole; the shaping die 3 can be locked by screwing the locking ring 1.

[0022] In this embodiment, the fixing sleeve 4 is provided with a fixing threaded hole 9 along the radial direction of the fixing sleeve 4, and is threadedly connected with a fixing bolt for fixing the position of the telescopic block 5, the fixing threaded hole 9 is communicated with the first hole, and a fixing groove 17 is provided on the outer wall of the telescopic block 5. When the telescopic block 5 is in a fixed state, the fixing bolt is pressed against the bottom of the fixing groove 17 of the telescopic block 5; by adopting this structure, the telescopic block 5 can be locked.

[0023] In order to facilitate the insertion of parts into the main rod 6, in this embodiment, a guide head 10 is provided at the left end of the main rod 6, and the guide head 10 is a conical structure.

[0024] In order to facilitate production, in this embodiment, the mold body 11 and the shaping block 12 are an integrated structure.

[0025] In this embodiment, the diameter of the shaping hole 14 decreases from the right end to the left end. Correspondingly, the outer diameter of the shaping block 12 is adapted to the shaping hole 14, mainly to adapt to the slope of the edge of the part.

[0026] In the present application, when the telescopic block 5 cooperates with the shaping punch 2 for forming, the telescopic block 5 compresses the spring 8 and is located inside the fixed sleeve 4. In this state, the shaping punch 2 is subjected to an artificial rightward thrust, and the telescopic block 5 is compressed by the spring 8 and given a leftward force, thereby enabling better molding quality.

[0027] During operation, the part is sleeved on the main rod 6, and then the shaping punch 2 equipped with the shaping die 3 is sleeved on the main rod 6. At this time, the shaping die 3 is only sleeved on the shaping punch 2 and is not locked with the locking ring 1. Then, the shaping punch 2 is pushed to the right, so that the forming convex portion 13 of the shaping block 12 of the shaping punch 2 is against the forming groove 16 of the telescopic block 5, and it is continued to be pushed to the right, thereby driving the telescopic block 5 to compress the spring 8 and move to the right until the telescopic block 5 is against the first step. At this time, the fixing bolt is screwed to lock the telescopic block 5, and the part is bent under the cooperation of the forming convex portion 13 and the forming groove 16. The edge of the bent part extends to the left. At this time, the whole part is manually rotated. The shaping die 3 is adjusted so that the edge of the part is stuck in the limit groove 15 of the shaping die 3. When the four edges of the part are all stuck in the limit groove 15, the shaping die 3 cannot continue to rotate. At this time, the shaping die 3 is pushed to the right so that it is pressed against the fixed sleeve 4. Then, the fixing bolt is loosened, and the telescopic block 5 moves to the left under the action of the spring 8, and the shaping punch 2 moves to the left. Then, the locking ring 1 is screwed to lock the shaping die 3. At this time, the shaping block 12 of the shaping punch 2 is tightly matched with the shaping hole 14 of the shaping die 3 to realize the shaping of the edge of the part. After the shaping is completed, the shaping punch 2 and the shaping die 3 and the locking ring 1 connected thereto are removed from the main rod 6 together, and the part can be taken out.

[0028] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subjected to various changes and modifications, which are within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims.

Claims

1. A forming fixture for a medical implantable titanium hook, comprising a fixture body, characterized in that: The clamp body includes a fixing sleeve, a shaping punch, a shaping die, a main rod, a limiting rod and a telescopic block. The fixing sleeve is provided with a mounting through hole along its axial direction, and the axial direction of the fixing sleeve is defined as the left-right direction. The mounting through hole includes a first hole, a second hole and a third hole which are sequentially arranged and connected from left to right. The telescopic block is arranged in the first hole so as to be movable left and right. The aperture of the second hole is smaller than that of the first hole to form a first step at the connection between the first hole and the second hole. The aperture of the second hole is larger than that of the third hole to form a second step at the connection between the second hole and the third hole. A spring is installed in the second hole. The left end of the spring abuts against the telescopic block, and the right end of the spring abuts against the second step. The limiting rod includes a rod body and a rod The rod body extends through the third hole and the second hole and then extends into the first hole to be fixedly connected to the right end of the telescopic block. The left end of the telescopic block is fixedly connected to the right end of the main rod. The shaping die is provided with a shaping hole. The diameter of the shaping hole decreases from the right end to the left end. The shaping die is sleeved on the shaping punch and is locked and fixed by a locking ring. A limiting groove is provided on the right end face of the shaping die. The shaping punch is sleeved on the main rod, and the shaping punch includes a die body and a shaping block matched with the shaping hole. The shaping block is connected to the right end of the die body. A forming convex portion with an arc-shaped structure is provided on the right end face of the shaping block. A forming groove matched with the forming convex portion is provided on the left end of the telescopic block.

2. The forming fixture for a medical implantable titanium hook according to claim 1, characterized in that: The outer wall of the mold body is provided with an external thread, the locking ring is provided with a locking hole, and the hole wall of the locking hole is provided with an internal thread matching with the external thread.

3. The forming fixture of a medical implantable titanium hook according to claim 2, characterized in that: The fixing sleeve is provided with a fixing threaded hole along the radial direction of the fixing sleeve, and is threadedly connected with a fixing bolt for fixing the position of the telescopic block, the fixing threaded hole is communicated with the first hole, a fixing groove is provided on the outer wall of the telescopic block, and when the telescopic block is in a fixed state, the fixing bolt is pressed against the bottom of the fixing groove of the telescopic block.

4. The forming fixture of a medical implantable titanium hook according to claim 3, characterized in that: The left end of the main rod is provided with a guide head for facilitating the insertion of parts.

5. The forming fixture for a medical implantable titanium hook according to claim 4, characterized in that: The guide head is a conical structure.

6. A forming fixture for a medical implantable titanium hook according to any one of claims 1 to 5, characterized in that: The mold body and the shaping block are an integrated structure.

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