TW201628014A - Frame for instrument rack and forming method thereof - Google Patents

Abstract

The present invention provides a frame for instrument rack and a forming method thereof. The frame is formed by bending a single metal plate. Two plate ends of the metal plate after being bent into the frame are located at positions of the frame facing inner ends of the instrument rack, such that water will not permeate into the instrument rack through the plate ends of the metal plate of the frame. The frame can be formed by bending a single metal plate according to the bending method of the present invention, thereby having good structural stiffness.

Description

Frame frame of instrument frame and molding method thereof

The invention relates to a frame strip of an instrument rack and a molding method thereof, in particular, the frame strip is formed by a single sheet metal plate by a bending method, and the metal plate is at two plate end positions after being bent into a frame strip. It is located at the inner side of the frame facing the instrument frame. Thereby, the rainwater does not penetrate into the instrument frame through the plate end of the metal plate of the frame strip, and the frame strip can be formed by bending a single metal plate according to the molding method of the present invention, and the structure is rigid.

Press, the instrument frame is a skeleton that constitutes an instrument box, and the instrument frame is mainly composed of a plurality of frame strips arranged in a straight direction and a horizontal direction. The structure of the first type of frame 1 is as shown in the first figure, and the first and second metal plates 1a and 1b are bent at right angles, and the first and second metal plates 1a and 1b are located at right angles. The inner corners are separated and separated by a one-side coupling groove 10. The first metal plate 1a is located at the right angle outer side A of the frame strip 1 , and the two ends are 180 degrees folded back and pressed to the upper and lower ends of the second metal plate 1b, and the two metal plates 1a and 1b are crimped. The end C is disposed on the right angle inner side B of the frame strip 1 to maintain the flatness of the right angle outer side A of the frame strip 1 , and the first metal plate 1 a is provided with a fixing hole 11 corresponding to the wall surface of the joint groove 10 . For use in conjunction with a link frame or a fixed support plate. However, when the instrument frame is formed, the right angle inner side B of the frame 1 is facing the outer side of the instrument frame, and the phase pressure connection ends C of the two metal plates 1a and 1b are located just outside the instrument frame, so that when the instrument The rack is placed outdoors, and the wind and rain can easily penetrate into the instrument frame from the position of the phase pressure terminal C at both ends of the two metal plates 1a, 1b, causing the instrument placed in the instrument frame to be damp or even damaged.
The structure of the second type of frame 2 is as shown in the second figure, and is also bent at right angles by the first and second metal plates 2a, 2b. The conventional second frame 2 and the conventional The main difference of the first type of frame strip 1 is that after the two ends of the first metal plate 2a are folded back 180 degrees to the right angle inner side B, the two ends of the first metal plate 2a are attached to the second metal plate. Both ends of 2b are arranged in front and rear and are pressed against the plate surface of the first metal plate 2a. In the structure of the second frame 2, the two ends of the first metal plate 2a and the two ends of the second metal plate 2b are still at the right angle inner side B of the frame 2, and the intersection position D faces the instrument frame. On the outside, as in the first type of frame 1, the rainwater will seep into the instrument frame from the transfer position D, causing the instrument placed in the instrument frame to be damp or even damaged. The above-mentioned first and second frame strips 1, 2, will cause the instrument placed in the instrument frame to be damp or even damaged, which obviously needs to be improved.
In terms of structural rigidity, the frame structure of the two metal plates is less rigid than the single metal plate. However, since the frame strip has one type of coupling groove 10 at the inner corner of the right angle, the circumferential surface of the coupling groove 10 has a groove. Wall, if the single metal plate is bent into a frame strip in a flexing manner, there is difficulty in it. Therefore, the first and second types of frame strips 1 and 2 are respectively bent by two metal plates and then spot welded. composition. If it is formed by "roll forming" (ie, Roll Forming, the metal material is placed between the upper and lower reverse rotating rolls, and passed through continuous plastic deformation to obtain the desired shape), it must be automatically The punching machine punches (punches the fixing hole 11), and then the metal plate is further rolled by a roll forming machine, and then the both ends of the metal plate are welded. Because the roll forming machine is a continuous production machine, the workpiece (metal plate) is in the middle, the roller is used to roll the workpiece, and the roller is used for the transmission action to continuously produce the workpiece to achieve the purpose of processing the workpiece. Therefore, after the frame strip is formed, the length is extremely long, and the length is about 30 meters or even 60 meters long. However, the length of the frame strip required for the general instrument frame is only about 2 meters, and therefore, it is formed by a roll forming machine. After the frame, the cutting work is still required. The metal plate of the frame strip must be punched (punched to the fixing hole 11) before rolling to enter the rolling forming machine, and the long metal plate (30 meters to 60 meters) is punched and then passed through. Rolling and welding at both ends of the metal plate, the frame strip after the molding is easily deformed and can not be used.

In view of the above shortcomings, the inventors have intensively conceived the research and development creation, and after a long period of effort, the present invention has been produced.
Therefore, the object of the present invention is to provide a frame strip which is formed by a single metal plate by a bending method, and the metal sheet is formed at a position of the end of the frame, facing the inside of the instrument frame, and the rainwater is not caused by the The frame strip penetrates into the frame of the instrument rack in the instrument frame and its forming method.
In order to achieve the above object, the frame structure of the present invention is mainly characterized in that the frame strip is formed by a single metal plate, and the plate end position of the metal plate is located at the inner end of the frame strip facing the instrument frame.
The main method of forming the frame strip is that after the metal plate forming the frame strip is crimped by the folding machine, the first plate end of the frame strip is crimped and the segments are bent at right angles, and the other second plate is The method of crimping the end surface with the metal plate is such that the second plate end and the metal plate segment surface to be pressed are pre-crimped, and a space is reserved in advance, when the metal plate is bent at the last right angle. In cooperation with the mold set, the second plate end of the metal plate is pulled and moved to eliminate the front gap, and the metal plate surface to be pressed is pressed to complete the bending of the frame strip.

(known)
1‧‧‧Box
1a‧‧‧First metal plate
1b‧‧‧second metal plate
10‧‧‧ Combination slot
A‧‧‧outer side
B‧‧‧Inside corner
C‧‧‧Phase connection
D‧‧‧ handover location
11‧‧‧Fixed holes
2‧‧‧Box
2a‧‧‧First metal plate
2b‧‧‧second metal plate
(this invention)
3‧‧‧Box
30‧‧‧Metal plates
31‧‧‧right angle
32‧‧‧ first side
33‧‧‧ second side
A‧‧‧outer side
B‧‧‧Inside corner
34‧‧‧ Combination slot
35, 36‧‧‧ fixing holes
37‧‧‧Flanking
30a, 30b‧‧‧ board end
4, 5, 6, 7, 8, 9‧‧‧ mold group
30c‧‧‧First bend
30d‧‧‧second bend
30e‧‧‧third bend
30f‧‧‧Fourth section
30g‧‧‧5th bend
30h‧‧‧6th bend
30i‧‧‧7th bend
30j‧‧‧ spacing
30k‧‧‧ eighth bend
70‧‧‧上模
71‧‧‧ acute angle head
72‧‧‧Flash groove
73‧‧‧reliance

The first figure shows a cross-sectional view of a first type of frame.
The second figure shows a cross-sectional view of a conventional second frame.
The third figure shows a perspective view of a frame strip of an embodiment of the present invention.
The fourth figure shows a cross-sectional view of a frame strip of an embodiment of the present invention.
The fifth figure shows a schematic diagram of a process of forming a frame strip according to an embodiment of the present invention.
The sixth figure shows a step of forming a single metal plate into a frame strip according to an embodiment of the present invention.

The present invention has been described in detail with reference to the accompanying drawings in which:
Referring to the third and fourth figures, the frame strip 3 of the instrument rack of the embodiment of the present invention is of a long strip shape, which is formed by a single metal plate 30 in a bent manner and bent to have a right angle 31, which is composed of a right angle 31. a first side 32 and a second side 33 are formed such that the frame strip 3 is formed with an outer corner side A (shown in the fourth figure) at an outer corner end of the right angle 31 with reference to the right angle 31, and An inner corner side B located at the corner end of the right angle 31. In the inner corner position of the right angle 31, the metal plate 30 is separated by an inner joint groove 34. The joint groove 34 is square, or triangular, etc., and the shape is not limited, and the frame strip 3 other than the joint groove 34 The wall surface is a double wall thick structure of the metal plate 30. The first side 32 and the second side 33 correspond to the wall surface of the coupling groove 34, and are provided with a square fixing hole 35 and a circular fixing hole 36. The two fixing holes 35 and 36 are arranged in a perforation manner. The end portion of the second side 33 of the frame strip 3 is bent at right angles to the B end of the inner corner side to have a side wing 37. The main improvements of the invention are:
After the single metal plate 30 is bent and the strip-shaped frame strip 3 is bent, the metal plate 30 is located at the two corresponding plate ends 30a, 30b at the long side position of the strip-shaped frame strip 3, and is located in the frame strip 3 The outer corner side A, in other words, the single metal plate 30 is bent into the frame strip 3 and the two side plate ends 30a, 30b are facing the inside of the instrument frame. In the fourth figure, the two plate ends 30a, 30b of the single metal plate 30 bent into the frame strip 3 are located on the first side 32 of the outer side A of the frame strip 3, and the single metal plate The two plate ends 30a, 30b of 30 correspond to each other at the first side 32, and are spot-welded by a spot welding tool.
Please refer to the fifth and sixth figures, which are schematic diagrams of the molding method of the frame strip 3 of the embodiment of the present invention. The molding method of the above-mentioned frame 3 is that the single metal plate 30 is flexibly formed by the folding machine mechanically matching the mold set, and the molding method of the frame 3 includes the following steps:
In the first step, the cut metal plate 30 is pre-punched into a plurality of fixing holes 35, 36, and then two corresponding plate ends of the metal plate 30, wherein the first plate end is placed in the die set 4 Flexing into an acute angle (as in Figure 5 (b)), becoming a first curved segment 30c (as in Figure 6 (b));
In the second step, the first bent section 30c is fed into the flattened mold set 5 to flatten the first bent section 30c (as shown in the fifth figure (c)), (as shown in the sixth figure (c) );
In the third step, the semi-finished product of the frame strip is flipped 180 degrees, the first bent portion 30c is turned downward, and the metal plate 30 is fed into the mold set 6 bent at right angles, and the first bent portion is The rear end of the 30c is bent into a second bent section 30d (as shown in the fifth figure (d)), (as shown in the sixth figure (d));
In the fourth step, the semi-finished product of the frame strip is further turned 180 degrees so that the first bent portion 30c is upward, and the metal plate 30 is fed into the mold group 6 bent at right angles, so that the rear end of the second curved portion 30d is rearward. Flexed into a third curved section 30e (as in the fifth figure (e)), (as in the sixth figure (e));
In the fifth step, the semi-finished product of the frame is turned 180 degrees so that the first bent portion 30c is downward, and the metal plate 30 is fed into the mold set 6 bent at right angles, so that the rear end of the third bent portion 30e is Flexed into a fourth curved section 30f (as in the fifth figure (f)), (as in the sixth figure (f));
In the sixth step, the semi-finished product of the frame is turned 180 degrees so that the first bent portion 30c is upward, and the second plate end of the metal plate 30 is fed into the mold group 6 bent at a right angle to bend a fifth curved portion. 30g (as in Figure 5 (g)), (as in Figure 6 (g));
In the seventh step, the first bent section 30c of the semi-finished product of the frame strip is upward, and a pair of vertices are selected between the fourth and fifth folding sections 30f and 30g of the metal plate 30, and the pair of vertices are sent into the bending In the acute angled mold group 7, the metal plate 30 is bent at an acute angle (this is the opposite of the metal plate 30), and the sixth bent portion 30h is separated by the acute angle (near the fifth tortuous portion 30g) And a seventh bent section 30i (adjacent to the fourth meandering section 30f), and then the metal plate 30 is pulled laterally from the mold set 7 (as shown in FIG. 5(h)), (as shown in the sixth figure (h) ));
In the eighth step, the semi-finished product of the frame strip is placed in the flattening die set 8, and the seventh curved segment 30i faces upward (as in the fifth figure (i)), (as in the sixth figure (i)), the seventh The bent section 30i is crimped to the sixth bent section 30h (as in the fifth figure (j)), (as in the sixth figure (j)). At this time, the second bent portion 30d, the third bent portion 30e, and the fourth bent portion 30f are moved downward with the seventh bent portion 30i, wherein the third bent portion 30e and the fourth bent portion 30f are moved downward. The square-shaped coupling groove 34 of the frame strip 3 is formed by a four-folded segment such as a partial surface of the fifth bent portion 30g and the sixth bent portion 30h. However, in this state, the fifth bent section 30g and the second bent section 30d are not touched, and a non-contacting pitch 30j is reserved (refer to FIG. 6(j)).
In a ninth step, the seventh bent section 30i and the sixth bent section 30h which have been phase-bonded to the semi-finished product of the frame strip are placed in a mold group 9 bent at right angles (as shown in FIG. 5(k)), As shown in the sixth figure (k), the intermediate portion of the crimped seventh bent portion 30i and the sixth bent portion 30h is bent at a right angle to bend an eighth bent portion 30k, after being bent at a right angle. The fifth bent section 30g is pulled and just pressed against the second bent section 30d, eliminating the aforementioned spacing 30j, thus completing the bending forming of the frame strip 3 (such as the fifth figure (l)), ( As shown in the sixth figure (k)), the plate ends of the metal plate 30 are located at the outer corner side A of the frame strip 3, that is, facing the inner side of the instrument frame. In order to strengthen the bonding strength of the frame strip 3, the frame strip 3 is located at the side end positions of the two sides or other positions, and is additionally spot-welded by a spot welding tool.
The bending method and the steps of the above-mentioned frame 3 are as shown in the fifth and sixth figures. The first side 32 of the frame strip 3 is the fifth bent section 30g, and the second side 33 of the frame strip 3 is the sixth bent section 30h, and the side flap 37 of the frame strip 3 is the eighth bend. In the segment 30k, the coupling groove 34 of the frame strip 3 is composed of a four-folded segment such as a third bent portion 30e, a fourth bent portion 30f, a fifth bent portion 30g, and a partial surface of the sixth bent portion 30h. After the seventh bent section 30i and the sixth bent section 30h are crimped, the side flap 37 and the second side 33 of the frame strip 3 (except the position of the joint groove 34) are double wall thickness, and the fifth bent section 30g and The second bent portion 30d and the first bent portion 30c are crimped, and the first side 32 of the frame strip 3 other than the position of the joint groove 34 is double wall thickness. The frame strip 3 is bent and formed by a single metal plate 30, and has a double wall thickness except for the position of the joint groove 34, and has a stronger frame structure than the double metal plate.
Next, referring to the fifth embodiment (h), the folding mold set 7 is folded into an acute angle to the metal plate 30, wherein the bottom end of the upper mold 70 of the mold set 7 is an acute angle head 71, in order to avoid the semi-finished product of the frame strip. When the fifth bending section 30g is displaced during the bending forming and is pressed by the fifth bending section 30g, the sidewall of the upper mold 70 has a concave flash groove 72 corresponding to the flashing groove 72. The other side wall of the upper mold 70 has a sloped abutment surface 73 for the angle between the second curved section 30d, the third curved section 30e, the fourth curved section 30f and the seventh curved section 30i. Reliance and positioning during molding. The acute angle bending point between the sixth bending section 30h and the seventh bending section 30i is pre-designed, and after the seventh bending section 30i and the sixth bending section 30h are crimped, the fifth bending The segment 30g and the second bending segment 30d are not touched with a spacing 30j therebetween, and the fifth bending segment 30g is pulled when the sixth bending segment 30h is further bent by an eighth bending segment 30k. The lead is then crimped to the second bent section 30d.
The above structure improvement and molding method of the frame strip of the present invention have at least the following advantages and effects in application:
1. Waterproof. Because the two plate ends of the single metal plate are located at the inner side end facing the instrument frame, the frame strip faces the outer wall surface of the instrument frame and the complete wall surface is provided, and the plate end of the metal plate is not disposed, so that the rainwater does not penetrate into the instrument frame, and is waterproof. The effect is good.
2. According to the bending method of the present invention, a single metal plate can be bent into a frame strip having a joint groove, and each wall surface except the joint groove has a double wall thickness, so that the structural rigidity of the frame strip is good.
In conclusion, the present invention can achieve the intended function and purpose, and the detailed description can be implemented by those skilled in the art, and the above embodiments are only used to illustrate the present invention, and all equivalent structures. Changes may still be made without departing from the scope of the invention.

3‧‧‧Box

30‧‧‧Metal plates

30a, 30b‧‧‧ board end

31‧‧‧right angle

32‧‧‧ first side

33‧‧‧ second side

A‧‧‧outer side

B‧‧‧Inside corner

34‧‧‧ Combination slot

35‧‧‧Fixed holes

37‧‧‧Flanking

Claims (6)

[Item 1] a frame strip of an instrument rack, the frame strip is bent by a piece of metal plate to grow into a strip shape, and has a right angle after being bent, the right angle is composed of a first side and a second side; the frame strip is The outer corner end of the right angle is an outer corner side, and the inner corner end of the right angle is an inner corner side; at the inner angle of the right angle, the metal plate is separated by an inner joint groove; One side and the second side corresponding to the wall surface of the coupling groove are provided with a fixing hole, and the end of the second side is bent at a right angle to the inner corner side end with a side wing; and the metal plate is folded After being bent into the frame strip, the metal plate is located at the opposite end of the long side of the strip-shaped frame strip, and is located on the outer corner side of the frame strip. [Item 2] The frame of the instrument rack of claim 1, wherein the side flaps and the first side and the second side are double-plate thick structures except for the positions of the corresponding slots. [Item 3] The frame of the instrument rack according to claim 1 or 2, wherein the metal plate end is welded and fixed by a welding tool. [Item 4] The frame of the instrument rack according to the third aspect of the invention, wherein the fixing hole has a square fixing hole and a circular fixing hole, and the two are arranged in a perforation arrangement. [Item 5] A molding method for preparing a frame strip of an instrument rack according to claim 2, wherein the metal plate is bent after the fixing hole, and then each of the side faces of the frame strip is respectively bent to have a corresponding bending section Then, the frame strip is predetermined to be the opposite end position of the side wing, and the pair of folding points are folded and crimped, and then the right wing is bent at a distance from the pair of folding points to complete the side flap, and the frame is completed; Features are:
The position of the folding point is selected such that the metal plate has a spacing between the bent portions at the two ends of the metal plate after the folding and crimping, and the spacing is folded at a right angle from the pair of folding points. After the flank is completed, the bending of the right-angle bending action is eliminated, and the bent portions at the two ends of the metal plate finally meet each other. [Item 6] The method for forming a frame strip of an instrument rack according to the fifth aspect of the invention, wherein the metal sheet has a pair of folding mold sets, and the bottom end of the upper mold of the pair of folding mold sets is an acute angle head, The side wall has a concave flash groove, and the other side wall corresponding to the flash groove has a beveled surface.