Tooth-shaped bending die for coiler
By designing liftable and adjustable retractor tooth bending molds, the problem that existing molds cannot adjust the tooth height is solved, and the processing of folding teeth of different heights is realized, which increases the use range of molds and reduces production costs.
Patent Information
- Application Number
- CN202421744067.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-23
AI Technical Summary
The existing tooth-shaped bending molds cannot adjust the processing tooth height, resulting in inconsistent pressure depth of the bending punch when the thickness of the part to be processed fluctuates, causing the folding tooth height to fluctuate, the punch and die wear, the gap increases, the bending size becomes smaller, and the product is unqualified.
A retractor toothed bending mold is designed, including a liftable pressurized structure and an adjustable punch and die structure. The movement of the pressurized structure is controlled by a lifting drive device, and the position of the punch and die is adjusted to meet the needs of different folding heights.
The folding teeth of different heights are achieved through a set of molds, which increases the use range of molds, reduces production costs, and solves the problem of instability in tooth shape height.
Smart Images
Figure CN222790384U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molds, and more specifically to a tooth-shaped bending mold for a retractor. Background Art
[0002] First, the workpiece is punched out into a tooth shape, and then bent by the bending punch of the existing tooth bending die. The existing bending punch is fixed. When the thickness of the workpiece fluctuates, the bending punch will press the workpiece too deeply or not in place due to the different thicknesses of the workpiece, resulting in fluctuating tooth height. The bending punch and the die are matched with clearance, and the friction of punching will cause the bending punch and the die to wear, which will cause the clearance to become larger and larger. When the bending size is fixed on the bending line, the bending height will become smaller and smaller, resulting in the position of the tooth tip becoming lower and lower, which will lead to unqualified products and scrapping. However, because the bending punch and the die are fixed, the height of the processed tooth shape cannot be adjusted.
[0003] Therefore, how to solve the problem that the existing bending mold cannot adjust the height of the processed tooth shape is an urgent problem to be solved by technical personnel in this field. Utility Model Content
[0004] In view of this, the purpose of the utility model is to provide a reel tooth bending die, which can adjust the height of the processed teeth. Only one set of molds can be used to process teeth of different heights, so as to increase the use range of the mold and reduce the production cost of the mold.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A retractor tooth-shaped bending die comprises a workbench and a pressurizing structure which can be raised and lowered and is arranged on the workbench. An adjustable convex die structure is arranged on the pressurizing structure, and an adjustable concave die structure is arranged on the workbench. The concave die structure and the convex die structure are arranged correspondingly.
[0007] Preferably, the male die structure is a cylindrical tooth-breaking punch, and a conical inclined surface is provided in the circumferential direction of the end portion where the tooth-breaking punch cooperates with the female die structure.
[0008] Preferably, the die structure includes a plurality of folding tooth inserts, and one end of the folding tooth inserts that cooperates with the folding tooth punch is provided with a slope surface that cooperates with the conical slope.
[0009] Preferably, it also includes a lifting drive device, which is connected to the pressurizing structure and is used to control the up and down movement of the pressurizing structure.
[0010] Preferably, the pressurizing structure includes an upper die base, an upper pad, a clamping plate, a stop plate and a fall-off plate which are sequentially connected from top to bottom, and the upper die base is connected to the lifting drive device.
[0011] Preferably, the clamping plate, the stop plate and the shedding plate are all provided with corresponding grooves for installing the tooth-breaking punch, and the tooth-breaking punch is movably arranged in the groove.
[0012] Preferably, a threaded hole is provided in the middle of the tooth-bending punch, and the tooth-bending punch is tightened under the upper pad through the cooperation of the threaded hole and the bolt, and the end face of the threaded hole close to the conical slope is provided with an expansion groove that cooperates with the end of the bolt.
[0013] Preferably, the stop plate is movably connected to the clamping plate, and both the clamping plate and the stop plate are provided with long grooves for installing springs, and both ends of the spring are fixed in the corresponding long grooves.
[0014] Preferably, the workbench includes a lower template, the lower template is provided with a square hole for installing the folding tooth insert, there is a gap between the folding tooth insert and the square hole, and also includes a lower pad located below the lower template.
[0015] Preferably, a telescopic member and a limiting column are provided on the lower template.
[0016] The utility model provides a reel tooth bending mold, which comprises a workbench and a pressurizing structure which can be lifted and lowered and is arranged on the workbench. An adjustable punch structure is arranged on the pressurizing structure, and the punch structure is driven to lift and lower by the pressurizing structure, so that the punch structure moves in the direction close to and away from the workbench, and the tooth folding height required by different needs is adapted by adjusting the punch structure. An adjustable die structure is arranged on the workbench, and the tooth folding height required by different needs is adapted by adjusting the die structure. The die structure is arranged correspondingly to the punch structure, and the tooth folding of the workpiece to be processed is achieved by cooperating with the punch structure and the die structure, and the processing requirements of different tooth folding heights are met by adjusting the punch structure and the die structure. That is to say, when the workpiece to be processed needs to be processed with tooth folding, the punch structure and the die structure are first adjusted according to the requirements of the tooth folding height, and then the workpiece to be processed is placed on the processing station of the workbench, and the punch structure is driven to move in the direction close to the die structure by the pressurizing structure until the workpiece to be processed has a tooth folding that meets the height requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0018] Figure 1 A schematic diagram of the structure of the tooth-shaped bending die for the retractor provided by the utility model;
[0019] Figure 2It is a partial enlarged view of the tooth-shaped bending die of the retractor provided by the utility model;
[0020] Figure 3 A partial enlarged view of the male mold structure provided by the utility model;
[0021] Figure 4 This is a partial enlarged view of the die structure provided by the utility model.
[0022] Reference numerals:
[0023] 01-Parts to be processed;
[0024] 1-working table, 11-lower template, 111-square hole, 12-lower pad;
[0025] 2-pressurizing structure, 21-upper die seat, 22-upper pad, 23-clamping plate, 24-stop plate, 25-shedding plate;
[0026] 3-convex die structure, 31-conical slope;
[0027] 4-die structure, 41-slope surface;
[0028] 5-bolt;
[0029] 6- telescopic parts;
[0030] 7-Limiting column. DETAILED DESCRIPTION
[0031] 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 described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.
[0032] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0033] It should be noted that the directional words such as "up, down, front, back, left, right" etc. mentioned below are defined based on the drawings in the specification.
[0034] The core of the utility model is to provide a retractor tooth bending die, which can adjust the height of the processed folded teeth. Folded teeth of different heights can be processed by only one set of dies, so as to increase the use range of the dies and reduce the production cost of the dies.
[0035] Please refer to Figure 1 and Figure 2 A retractor tooth profile bending die comprises a workbench 1 and a pressurizing structure 2 which is liftable and arranged on the workbench 1. An adjustable convex die structure 3 is arranged on the pressurizing structure 2. The convex die structure 3 is lifted and lowered by the pressurizing structure 2, so that the convex die structure 3 moves toward and away from the workbench 1. The convex die structure 3 is adjusted to meet different requirements of tooth bending height. An adjustable concave die structure 4 is arranged on the workbench 1. The concave die structure 4 is adjusted to meet different requirements of tooth bending height. The concave die structure 4 is arranged corresponding to the convex die structure 3. The cooperation of the structure 3 and the die structure 4 realizes the tooth bending of the workpiece 01. The processing requirements of different tooth bending heights are met by adjusting the punch structure 3 and the die structure 4. That is to say, when the workpiece 01 needs to be tooth bent, the punch structure 3 and the die structure 4 are first adjusted according to the tooth bending height requirements, and then the workpiece 01 is placed on the processing station of the workbench 1, and the punch structure 3 is driven by the pressure structure 2 to move toward the die structure 4 until the workpiece 01 is processed with teeth that meet the height requirements.
[0036] The reel tooth bending die set in the above manner can be adapted to the requirements of different bending tooth heights of the workpiece 01 to be processed by adjusting the male die structure 3 or the female die structure 4.
[0037] Please refer to Figure 3 The punch structure 3 is a cylindrical tooth-breaking punch, and a conical inclined surface 31 is provided in the circumferential direction of the end portion where the tooth-breaking punch cooperates with the die structure 4.
[0038] It should be noted that the punch structure 3 is designed to be cylindrical, and the bottom surface is designed to be a conical slope 31. Through the cooperation of the die structure 4, after the punch structure 3 repeatedly stamps the same position of the workpiece 01 for many times, the teeth meeting the preset bending height are punched out on the workpiece 01.
[0039] Please refer to Figure 4 The die structure 4 includes a plurality of folding tooth inserts, and one end of the folding tooth inserts that cooperates with the folding tooth punch is provided with a slope surface 41 that cooperates with the conical slope 31.
[0040] It can be understood that when the pressure structure 2 drives the tooth-bending punch to move downward until it abuts against the workpiece 01 to be processed, it continues to punch downward so that the conical slope 31 at the lower end of the tooth-bending punch cooperates with the slope surface 41 at the upper end of the tooth-bending insert, and at the same time, the workpiece 01 to be processed is punched, thereby bending the workpiece 01 to be processed until the workpiece 01 to be processed is bent into a tooth of a preset height and stops, and the tooth-bending punch is driven by the pressure structure 2 to move upward to the initial position.
[0041] Furthermore, it also includes a lifting drive device, which is connected to the pressurizing structure 2 and is used to control the up and down movement of the pressurizing structure 2.
[0042] It should be noted that the pressurizing structure 2 is driven to move up and down by a lifting drive device. In actual applications, the lifting drive device is a press, and it can also be other drive devices that control the up and down movement of the pressurizing structure 2. There is no limitation to this, as long as the above-mentioned technical effects can be achieved.
[0043] In the above embodiment, the pressurizing structure 2 includes an upper die base 21, an upper pad 22, a clamping plate 23, a stop plate 24 and a shedding plate 25 which are sequentially connected from top to bottom, and the upper die base 21 is connected to the lifting drive device.
[0044] It can be understood that the connection with the lifting drive device is realized by setting the upper die seat 21, the axial limit of the tooth-breaking punch is realized by setting the upper pad 22, and the radial limit of the tooth-breaking punch is realized by setting the clamping plate 23, the stop plate 24 and the drop plate 25. The upper die seat 21, the upper pad 22, the clamping plate 23, the stop plate 24 and the drop plate 25 are connected in sequence, and the entirety can be driven up and down by the lifting drive device.
[0045] On the basis of the above-mentioned embodiment, corresponding grooves are provided on the clamping plate 23, the stop plate 24 and the shedding plate 25 to install the tooth-breaking punch, and the tooth-breaking punch is movably arranged in the groove.
[0046] It should be noted that by setting corresponding grooves at the same position on the clamping plate 23, the stop plate 24 and the falling plate 25 to install the tooth bending punch and limit the tooth bending punch to avoid the tooth bending punch from deflecting during the up and down movement, the accuracy of the processed tooth bending can be guaranteed.
[0047] In the above embodiment, a threaded hole is provided in the middle of the tooth punch, and the tooth punch is tightened under the upper pad 22 through the cooperation of the threaded hole and the bolt 5. The end face of the threaded hole close to the conical slope 31 is provided with an expansion groove that cooperates with the end of the bolt 5.
[0048] It can be understood that when the tooth-bending punch is worn out after repeated punching at the same position during the process of processing the workpiece 01, it is only necessary to loosen the bolt 5, remove the tooth-bending punch, add a gasket that meets the thickness requirements at the upper end of the tooth-bending punch, and then tighten the tooth-bending punch and the gasket on the upper pad 22 again through the bolt 5. The tooth-bending punch can be reused to reduce processing and maintenance costs, and the height of the tooth of the workpiece 01 can also be quickly adjusted.
[0049] When the height of the tooth-bending punch is too high, the bolt 5 can be loosened to remove the tooth-bending punch from the groove, and the upper end of the tooth-bending punch can be ground according to the preset height requirement. When the tooth-bending punch is ground to the preset height, it can be tightened to the upper pad 22 by the bolt 5.
[0050] As a preferred embodiment, the stop plate 24 is movably connected to the clamping plate 23, and both the clamping plate 23 and the stop plate 24 are provided with long grooves for installing springs, and both ends of the spring are fixed in the corresponding long grooves.
[0051] It should be noted that the upper pad 22 and the clamping plate 23 are fixedly connected, the stop plate 24 and the falling plate 25 are fixedly connected, and the stop plate 24 and the clamping plate 23 are movably connected. That is to say, when the lifting drive device drives the upper die base 21 to move downward, the upper die base 21 drives the upper pad 22, the clamping plate 23, the stop plate 24 and the falling plate 25 to move downward synchronously. However, due to the influence of the self-gravity of the stop plate 24 and the falling plate 25, the stop plate 24 and the clamping plate 23 will be separated and only connected by a spring until the lower end face of the tooth punch contacts the workpiece 01 to be processed, and then the whole is controlled to continue to move downward until the lower end face of the falling plate 25 abuts against the worktable 1. At this time, the spring is compressed, and then the whole is controlled to continue to move downward until the stop plate 24 abuts against the clamping plate 23 and continues to punch downward until the workpiece 01 to be processed is bent into a tooth that meets the requirements.
[0052] When the tooth bending punch completes the tooth bending processing of the workpiece 01, the tooth bending punch is driven to move upward by the lifting drive device, and the upper die base 21, the upper pad 22 and the clamping plate 23 move upward first. At this time, the compressed spring begins to recover until the tension applied to the spring overcomes the gravity of the stop plate 24 and the drop-off plate 25, and then begins to pull the stop plate 24 and the drop-off plate 25 to move upward synchronously to leave the workbench 1.
[0053] In the above situation, the workbench 1 includes a lower template 2 , on which a square hole 111 for installing a folding tooth insert is provided, with a gap between the folding tooth insert and the square hole 111 , and also includes a lower pad 12 located below the lower template 2 .
[0054] It can be understood that the tooth insert is set to a small rectangle and the upper end face is set to a slope surface 41 that matches the conical slope 31 of the tooth punch. Square holes 111 are cut at corresponding positions on the lower template 2, and the tooth insert is installed therein. A sliding gap is maintained between the tooth insert and the square hole 111, so that when the tooth insert needs to be adjusted, a magnet can be used to quickly take out the tooth insert and adjust its position.
[0055] When the left and right positions of the folding tooth insert need to be adjusted, the folding tooth inserts at the left and right positions in the square hole 111 are sucked out and ground, and then the ground folding tooth inserts are put into the square hole 111 to adjust the left and right positions. When the front and back positions of the folding tooth insert need to be adjusted, the folding tooth inserts at the front and back positions in the square hole 111 are sucked out and ground, and then the ground folding tooth inserts are put into the square hole 111 to adjust the front and back positions.
[0056] In the above embodiment, the lower template 2 is provided with a telescopic member 6 and a limiting column 7 .
[0057] It should be noted that when the pressure mechanism moves downward as a whole, the fall-off plate 25 first contacts the telescopic member 6, and then the tooth punch moves downward to abut against the workpiece 01 to be processed. During the process of the tooth punch moving downward to abut against the workpiece 01 to be processed, the fall-off plate 25 and the stop plate 24 move upward relative to the tooth punch until the stop plate 24 abuts against the clamping plate 23, and the fall-off plate 25 continues to move downward until the lower end face of the fall-off plate 25 abuts against the limiting column 7. By setting the limiting column 7, a gap can be left between the lower end face of the fall-off plate 25 and the upper end face of the lower template 2, so as to prevent the fall-off plate 25 from causing wear to the lower template 2 when punching downward.
[0058] In practical applications, the tooth-bending punch fixed on the upper pad 22 and the tooth-bending inserts divided into small pieces and fixed on the lower template 2 are fixed in accordance with the requirements of the workpiece 01 to be processed, and the problem of unstable tooth height caused by the punching gap is solved by changing the front, back, left, and right positions of the tooth-bending inserts. When the punching gap is at the theoretical value, the tooth height after forming meets the requirements. When the gap is worn as the number of punching increases, the tooth-bending inserts fixed on the lower template 2 can be removed, and the bending line can be moved forward and backward by flat grinding the tooth-bending inserts or by using shims, so as to achieve the purpose of rapid adjustment. The problem of unstable tooth height caused by thickness fluctuations of the workpiece 01 to be processed is solved by adjusting the tooth-bending punch.
[0059] The tooth-bending punch is made into an integral cylindrical shape, and the tooth-bending punch is locked on the upper pad 22 by bolts 5. Because the closing height of the mold is constant, when the workpiece 01 to be processed becomes thinner, there will be a gap in the mold at the bottom dead center, resulting in a gap between the tooth-bending punch and the tooth-bending insert, and the tooth profile height angle is not in place, resulting in a reduction in the tooth profile height. At this time, you only need to remove the tooth-bending punch to increase the height to restore the gap between the tooth-bending punch and the tooth-bending insert. When the workpiece 01 to be processed becomes thicker, since the gap between the tooth-bending punch and the tooth-bending insert is constant, the thickened workpiece 01 to be processed will be squeezed and deformed to spread around under the constant gap, resulting in unstable tooth profile height. At this time, you only need to remove the tooth-bending punch to lower the height to restore the gap between the tooth-bending punch and the tooth-bending insert.
[0060] A bolt 5 hole is drilled in the middle of the tooth-breaking punch, and the bolt 5 is used to fix the tooth-breaking punch on the upper pad 22. A hole is cut at the corresponding position of the upper pad 22 to fix the position of the tooth-breaking punch. When the mold moves up and down in the press, the fall-off plate 25 first contacts the telescopic member 6. At this time, a certain gap is created between the fall-off plate 25 and the lower template 2 through the limit columns 7 arranged at different positions of the lower template 2. Generally, the value is negative 0.1 mm of the thickness of the workpiece 01 to be processed, so that the workpiece 01 to be processed is pressed but not deformed. At this time, when the press continues to move downward, the fall-off plate 25 presses the workpiece 01 to death and makes it immobile. When the tooth-breaking punch begins to contact The tooth profile of the workpiece 01 to be processed begins to deform, and the required shape of the tooth is finally formed by setting the slope on the tooth folding punch and the tooth folding insert; at this time, if the tooth folding height is insufficient, the punch can be raised by removing the tooth folding punch and welding or inserting a gasket on the upper end of the punch. At this time, the tooth profile height increases according to the increase in the height of the tooth folding punch, but if there are multiple teeth with different heights, that is, some are high and some are low, the corresponding tooth folding insert in the lower template 2 can be taken out to fine-tune the height of the tooth folding insert. At the same time, because the tooth folding insert is set to a rectangle, the tooth profile height can also be adjusted by moving it forward, backward, left and right to adjust the bending line.
[0061] In summary, the reel tooth bending die provided by the utility model divides the die structure 4 into different tooth inserts, and controls the different heights of different teeth by taking out the tooth inserts for flat grinding and plugging in gaskets. At the same time, the tooth punch is raised or lowered by loosening the bolt 5 to accommodate the uneven thickness defects of the workpiece 01 to be processed.
[0062] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0063] The above is a detailed introduction to a retractor tooth bending die provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
Claims
1. A retractor tooth bending die, characterized in that: The invention comprises a workbench (1) and a pressurizing structure (2) which is arranged on the workbench (1) and can be raised or lowered; an adjustable male mold structure (3) is arranged on the pressurizing structure (2); an adjustable female mold structure (4) is arranged on the workbench (1); and the female mold structure (4) is arranged corresponding to the male mold structure (3).
2. The retractor tooth bending die according to claim 1, characterized in that: The male die structure (3) is a cylindrical tooth-breaking punch, and a conical inclined surface (31) is provided in the circumferential direction of the end portion of the tooth-breaking punch that cooperates with the female die structure (4).
3. The retractor tooth bending die according to claim 2, characterized in that: The die structure (4) comprises a plurality of folding tooth inserts, and one end of the folding tooth inserts that cooperates with the folding tooth punch is provided with a slope surface (41) that cooperates with the conical slope surface (31).
4. The retractor tooth profile bending die according to claim 3, characterized in that: It also comprises a lifting drive device, which is connected to the pressurizing structure (2) and is used to control the up and down movement of the pressurizing structure (2).
5. The retractor tooth profile bending die according to claim 4, characterized in that: The pressurizing structure (2) comprises an upper die base (21), an upper pad (22), a clamping plate (23), a stop plate (24) and a drop plate (25) which are connected in sequence from top to bottom, and the upper die base (21) is connected to the lifting drive device.
6. The retractor tooth profile bending die according to claim 5, characterized in that: The clamping plate (23), the stop plate (24) and the shedding plate (25) are all provided with corresponding grooves for mounting the tooth-breaking punch, and the tooth-breaking punch is movably arranged in the groove.
7. The retractor tooth-shaped bending die according to claim 6, characterized in that: A threaded hole is provided in the middle of the tooth-bending punch, and the tooth-bending punch is screwed under the upper pad (22) through the cooperation of the threaded hole and the bolt (5). The end surface of the threaded hole close to the conical inclined surface (31) is provided with an expansion groove that cooperates with the end of the bolt (5).
8. The retractor tooth profile bending die according to claim 7, characterized in that: The stop plate (24) is movably connected to the clamping plate (23); both the clamping plate (23) and the stop plate (24) are provided with long slots for installing springs; and two ends of the spring are fixed in the corresponding long slots.
9. The retractor tooth-shaped bending die according to claim 8, characterized in that: The workbench (1) comprises a lower template (11), the lower template (11) being provided with a square hole (111) for mounting the folding tooth insert, a gap being provided between the folding tooth insert and the square hole (111), and further comprising a lower pad (12) located below the lower template (11).
10. The retractor tooth profile bending die according to claim 9, characterized in that: The lower template (11) is provided with a telescopic member (6) and a limiting column (7).