Retroversion prevention structure of multilateral flexible bending center die
By adding a limiting groove and a limiting pin to the bending center mold, the problem of backward tilting deformation of the upper pressure knife was solved, thereby improving the stability and precision of the mold.
Patent Information
- Application Number
- CN202520268494.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Existing bending center dies suffer from backward tilting deformation of the upper pressure tool during the processing of large-format thick plates, which affects processing accuracy and stability.
A limiting groove and a limiting pin are added to the mold structure. The limiting pin and the limiting groove cooperate to prevent the upper pressure knife from tilting backward and deform. The position of the limiting pin is further stabilized by the spring and the bearing screw.
It effectively prevents the upper pressure tool from tilting and deforming, has a simple structure, low cost, is safe and reliable, and is easy to adjust, thus improving machining accuracy and stability.
Smart Images
Figure CN223699094U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a bending center die, in particular to a multi-edge flexible bending center die anti-backward tilting structure. BACKGROUND
[0002] The bending center is a kind of processing equipment with higher automation degree and higher processing efficiency developed in sheet metal bending processing field in recent years, and gradually popularized in sheet metal processing industry application.With its application subdivision industry expanding, the application in the processing subdivision industry of large-format thick plate such as electric cabinet and security door also begins successively.
[0003] With the processing width becoming larger and thicker, the bending load becomes larger and larger.The backward tilting problem caused thereby is more and more serious, which greatly affects the bending precision and stability.
[0004] As shown in Figure 1 and Figure 2 , the bending center 10 includes a sliding plate 20, a bending knife 30, a pressing knife, a connecting plate 50 and a pressing plate 60; wherein the pressing knife includes an upper pressing knife 41 and a lower pressing knife 42; the upper pressing knife top is detachably connected with the sliding plate bottom through the connecting plate; the pressing plate is arranged on the connecting plate, and the lower end of the pressing plate can press the outer side of the upper pressing knife. However, when the plate is bent, the upper pressing knife bears horizontal load, and the upper pressing knife will have very obvious backward tilting deformation as shown in Figure 3 . However, there is no effective solution at present. UTILITY MODEL CONTENT
[0005] The technical problem to be solved by the utility model is to solve the above-mentioned problems of the prior art, and provide a multi-edge flexible bending center die anti-backward tilting structure, which adds a limiting pin and a limiting groove on the side away from the pressing plate, so as to prevent the backward tilting deformation of the upper pressing knife, so that the structure is simple, the cost is low, it is safe and reliable, and it is convenient to adjust.
[0006] To solve the above-mentioned technical problems, the utility model adopts the technical scheme that:
[0007] A multi-edge flexible bending center die anti-backward tilting structure, comprising a limiting groove and a limiting pin.
[0008] The bending center comprises a sliding plate, an upper pressing knife, a pressing plate and a connecting plate; wherein the connecting plate top is installed on the sliding plate bottom, the connecting plate bottom surface cooperates with the upper pressing knife top surface, the pressing plate is arranged on the connecting plate, and the pressing plate bottom can press the outer side of the upper pressing knife top;
[0009] The limiting groove is arranged on the connecting plate bottom surface away from the pressing plate, and the bottom is open.
[0010] The bottom of the limiting pin is installed on the top of the upper pressing knife on the side away from the pressing plate, and the top of the limiting pin extends into and clamps in the limiting slot.
[0011] The locking screw is further included; the top of the upper pressing knife on the side away from the pressing plate is provided with a pin hole, and the bottom of the limiting pin is located in the pin hole; the locking screw is arranged in the upper pressing knife and is used for locking the limiting pin.
[0012] The pin hole and the limiting pin are vertically arranged.
[0013] The pin hole and the limiting pin are obliquely arranged, and one side wall of the top of the limiting pin is provided with a limiting matching surface matched with a side wall of the limiting slot.
[0014] The locking screw has at least one, which is arranged on the peripheral side wall of the upper pressing knife.
[0015] The spring is further included and is arranged in the pin hole below the positioning pin.
[0016] The bearing screw is further included; the top end of the bearing screw is threadedly connected with the positioning pin; when the spring is not arranged, the bottom end of the bearing screw is directly in close contact with the bottom surface of the pin hole; when the spring is arranged, the bottom end of the bearing screw passes through the spring first and then is in close contact with the bottom surface of the pin hole.
[0017] The positioning pin has an axial through inner threaded hole.
[0018] The limiting slot is a tapered slot, and the cross section of the limiting slot is an isosceles trapezoid.
[0019] The generatrix taper of the limiting slot is less than 5°.
[0020] The utility model has the following beneficial effects: the application adds the limiting pin and the limiting slot on the side away from the pressing plate, thereby preventing the backward deformation of the upper pressing knife, and the structure is simple, the cost is low, the safety is reliable, and the adjustment is convenient. Further, the spring is arranged to clear the gap between the limiting pin and the limiting slot. Further, the bearing screw is arranged to prevent the downward sliding of the limiting pin caused by the insufficient locking force of the locking screw on the limiting pin. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 The structure schematic view of the bending center is shown.
[0022] Figure 2 The connection structure schematic view of the upper pressing knife and the connecting plate in the prior art is shown.
[0023] Figure 3 The connection structure of the upper pressing knife and the connecting plate in the prior art is shown. Figure 2 The backward deformation schematic view of the upper pressing knife is shown.
[0024] Figure 4A structure schematic diagram of a multi-edge flexible bending center mold anti-backward tilting structure in Embodiment 1 of the present application is shown.
[0025] Figure 5 A structure schematic diagram of a multi-edge flexible bending center mold anti-backward tilting structure in Embodiment 2 of the present application is shown. Figure 4 A partial enlarged schematic diagram of a middle cross-sectional area is shown.
[0026] Figure 6 A structure schematic diagram of a multi-edge flexible bending center mold anti-backward tilting structure in Embodiment 2 of the present application is shown.
[0027] Figure 7 A structure schematic diagram of a multi-edge flexible bending center mold anti-backward tilting structure in Embodiment 3 of the present application is shown; wherein (a) is a side view; (b) is a front view.
[0028] Figure 8 A structure schematic diagram of a multi-edge flexible bending center mold anti-backward tilting structure in Embodiment 4 of the present application is shown; wherein (a) is a front view; (b) is a side view; (c) is a partial cross-sectional enlarged schematic diagram of (a).
[0029] Figure 9 An assembly process schematic diagram of a multi-edge flexible bending center mold anti-backward tilting structure in the present application is shown; wherein (a) is an installation spring and limit pin schematic diagram; (b) is a limit pin locking schematic diagram; (c) is an installation bearing screw schematic diagram; (d) is an assembly completion schematic diagram.
[0030] Among them:
[0031] 10. Bending center; 20. Slide plate; 30. Folding knife;
[0032] 41. Upper pressing knife; 411. Pin hole; 42. Lower pressing knife;
[0033] 50. Connecting plate; 51. Limit slot;
[0034] 60. Pressing plate;
[0035] 70. Limit pin; 71. Locking screw; 72. Limit matching surface;
[0036] 80. Bearing screw; 81. Spring; 90. Plate. DETAILED DESCRIPTION
[0037] The present application will be further described in detail below in combination with the drawings and specific preferred embodiments.
[0038] In the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "left side", "right side", "upper part", "lower part" and the like is the orientation or position relationship based on the drawings shown, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and "first", "second" and the like do not represent the importance of the parts, so it cannot be understood as a limitation on the utility model. The specific size adopted in the embodiment is only for the purpose of illustrating the technical scheme, and does not limit the protection scope of the utility model.
[0039] The structure of the bending center is as shown in Figure 1 and Figure 2 The specific connection mode is the same as described in the background art, and will not be described here again. Among them, the pressing plate is also called a pressing block, which can be manually bolted or automatically pressed.
[0040] The upper pressing knife top surface and the connecting plate bottom are preferably provided with an L-shaped horizontal connecting surface and a vertical connecting surface; wherein the horizontal connecting surface is away from the pressing plate, and is preferably horizontally arranged, but is not limited to horizontal; the vertical connecting surface is preferably vertically arranged, but is not limited to vertical. The connecting plate is fixedly connected with the 20 sliding plate, or is integrally arranged.
[0041] The application is described in detail through the following preferred embodiments.
[0042] Embodiment 1
[0043] As shown in Figure 4 and Figure 5 A multi-edge flexible bending center mold anti-rear inclination structure, comprising a limiting groove 51, a limiting pin 70, a locking screw 71, a bearing screw 80 and a spring 81.
[0044] The limiting groove is arranged on the bottom surface of the connecting plate away from the pressing plate (i.e. the horizontal connecting surface), and the bottom is open.
[0045] Further, the limiting groove is preferably a tapered groove, and the cross section thereof is preferably an isosceles trapezoid, which can be selected to have different taper angles. The smaller the taper angle, the greater the bearing capacity. When the taper angle of the generatrix of the limiting groove is less than 5°, i.e. within the self-locking angle, self-locking can be achieved, and the bearing load is very large, but the processing precision is high and the assembly is difficult. When the taper angle is large, the processing and assembly are easy, but the bearing capacity is slightly weak. Among them, the limiting groove is also within the protection scope of the utility model.
[0046] The bottom of the limit pin 70 is installed on the top of the upper pressing blade (i.e. the transverse connecting surface) on the side away from the pressing plate, and the top of the limit pin extends into and clamps in the limit slot. When the locking screw, the bearing screw and the spring are not arranged, the bottom of the limit pin can be directly fixedly connected or threadedly connected with the upper pressing blade.
[0047] Further, the top of the upper pressing blade on the side away from the pressing plate is provided with a vertically arranged pin hole 411, and the bottom of the limit pin is located in the pin hole. A spring can be arranged as needed, and when the spring is not arranged, the bottom of the limit pin can be directly abutted against the bottom of the pin hole. In the embodiment, the spring is preferably arranged in the pin hole below the limit pin, so as to realize automatic pressing and cooperation of the limit pin and the limit slot and clear the gap between the limit pin and the limit slot.
[0048] The locking screw has one, which is arranged on the side wall surface of the upper pressing blade away from the pressing plate and has high machining precision.
[0049] Further, the positioning pin in the embodiment has an axially through inner threaded hole, the inner threaded hole is threadedly connected with the top end of the bearing screw, and the bottom end of the bearing screw passes through the spring and is in pressing contact with the bottom surface of the pin hole. The arrangement of the bearing screw can prevent the limit pin from sliding downward due to insufficient locking force of the locking screw on the limit pin when the load of the mold is very large during the bending process.
[0050] Embodiment 2
[0051] As shown in Figure 6 , embodiment 2 is basically the same as embodiment 1, and the difference lies in that the locking screw is arranged on the side wall surface of the upper pressing blade with the pressing plate.
[0052] Embodiment 3
[0053] As shown in Figure 7 , embodiment 3 is basically the same as embodiment 1, and the difference lies in that the locking screw has two and is symmetrically arranged on the two side wall surfaces of the upper pressing blade adjacent to the pressing plate, which is suitable for the case that the mold is wide.
[0054] Embodiment 4
[0055] As shown in Figure 8 , embodiment 4 is basically the same as embodiment 1, and the difference lies in that the pin hole and the limit pin are arranged obliquely, and one side wall of the top of the limit pin is provided with a limit matching surface 72 matched with the side wall of the limit slot.
[0056] As shown in Figure 9 , a method for assembling a multi-edge flexible bending center mold anti-rear tilting structure includes the following steps.
[0057] Step 1, install the spring and the limit pin: as shown in Figure 9(a) as shown, the connecting plate is connected with the pressing plate, and the spring and the limiting pin are installed in the pin hole, and the limiting pin is clamped into the limiting groove and automatically attached to the limiting groove under the action of the spring.
[0058] Step 2, locking the limiting pin: as Figure 9 (b) as shown, the limiting pin is locked by using a locking screw.
[0059] Step 3, installing the bearing screw: as Figure 9 (c) as shown, the upper pressing knife is removed by loosening the pressing plate, the bearing screw is inserted into the internal threaded hole of the limiting pin, and the bottom of the bearing screw passes through the spring and abuts against the bottom of the pin hole, preventing the limiting pin from being displaced downward under force.
[0060] Step 4, as Figure 9 (d) as shown, the upper pressing knife is connected with the connecting plate, and the pressing plate is locked, and the assembly is completed.
[0061] The preferred embodiments of the utility model are described in detail above, but the utility model is not limited to the specific details in the above embodiments, and various equivalent transformations of the technical solutions of the utility model can be made within the technical concept of the utility model, and these equivalent transformations all belong to the protection scope of the utility model.
Claims
1. A multi-sided flexible bending center mold anti-rear tilting structure, characterized in that: The limiting slot and the limiting pin are arranged on the connecting plate. The bending center comprises a sliding plate, an upper pressing knife, a pressing plate and a connecting plate. The connecting plate is installed on the bottom of the sliding plate or is integrally arranged. The bottom surface of the connecting plate is matched with the top surface of the upper pressing knife.
2. The multi-sided, flexible bend center mold anti-sag structure of claim 1, wherein: The pressing plate is arranged on the connecting plate.
3. The multi-sided, flexible bend center mold anti-sag structure of claim 2, wherein: The limiting slot is arranged on the bottom surface of the connecting plate away from the pressing plate.
4. The multi-sided, flexible bend center mold anti-sag structure of claim 2, wherein: The bottom of the limiting pin is installed on the top of the upper pressing knife away from the pressing plate.
5. The multi-sided, flexible bend center mold anti-sag structure of claim 2, wherein: The top of the limiting pin is matched with the limiting slot.
6. The multi-sided, flexible bend center mold anti-sag structure of claim 2, wherein: The upper pressing knife is provided with a pin hole.
7. The multi-sided, flexible, bend center mold, anti-trailing structure of claim 2 or 6, wherein: The bottom of the limiting pin is located in the pin hole.
8. The multi-sided, flexible, bend center mold, anti-trailing structure of claim 7, wherein: The locking screw is arranged in the upper pressing knife to lock the limiting pin.
9. The multi-sided, flexible bend center mold anti-sag structure of claim 1, wherein: The pin hole and the limiting pin are vertically arranged.
10. The multi-sided, flexible, bend center mold, anti-trailing structure of claim 9, wherein: The pin hole and the limiting pin are obliquely arranged. One side wall of the top of the limiting pin is provided with a limiting matching surface matched with the side wall of the limiting slot. The locking screw has at least one and is arranged on the side wall of the upper pressing knife. The spring is arranged in the pin hole below the positioning pin. The bearing screw is arranged. The top end of the bearing screw is threadedly connected with the positioning pin. When the spring is not arranged, the bottom end of the bearing screw is directly in contact with the bottom surface of the pin hole. When the spring is arranged, the bottom end of the bearing screw passes through the spring and is in contact with the bottom surface of the pin hole. The positioning pin has an axial through inner thread hole. The limiting slot is a tapered slot. The cross section of the limiting slot is an isosceles trapezoid. The pitch of the limiting slot is less than 5°.