Semitrailer through beam forming die

Abstract

The utility model provides a semitrailer through beam forming die which comprises a pressing die and a clamping core die which are arranged in pairs, the pressing die comprises a male die and a female die, and the pressing die is used for bending a part of a workpiece so as to press and form the workpiece into a through beam; the clamping core die is arranged between the male die and the female die, and the clamping core die is used for clamping the workpiece and providing support for the stress surface of the workpiece; the clamping core mold comprises a floating core mold and a supporting core mold which are linearly arranged, the position of the floating core mold is right opposite to the convex position and the concave position of the convex mold and the concave mold of the pressing mold, and when the convex mold is pressed downwards, the floating core mold is driven to slide and abut against the concave mold. The semitrailer penetrating beam forming die has the advantages that the semitrailer penetrating beam forming die can be suitable for various types of sectional materials and can work on two workpieces at the same time, the production efficiency can be greatly improved, and the straightness and planeness of a penetrating beam can be improved so as to improve the bending quality.

Description

Technical Field

[0001] This utility model relates to a semi-trailer through beam processing equipment, specifically, to a semi-trailer through beam forming mold. Background Technology

[0002] The through beam, as the supporting crossbeam of the semi-trailer, is a key structural component in the semi-trailer frame. It mainly serves to support and connect the various parts of the frame, ensuring the overall stability and load-bearing capacity of the frame.

[0003] In the semi-trailer manufacturing industry, most through beams are currently produced using horizontal single-piece integrated molding. This requires manual placement of the workpiece onto the molding machine's workbench, where it is then plastically deformed (bent) by mold pressing and pressure holding to create a through beam suitable for use in semi-trailers.

[0004] For example, Chinese utility model patent CN201120368388.2 discloses a processing equipment for a through beam of a car floor. The workpiece 6 is placed between the left and right clamping structures 7 and 8. The workpiece 6 is clamped by the clamping structures. Then, the hydraulic device 1 is operated, the hydraulic rod 2 moves down, which drives the upper mold platform 4 to move down, thereby driving the upper mold 5 to move down and press the workpiece 6.

[0005] However, in the aforementioned public documents Figure 1 When the workpiece shown is clamped by the left and right clamping structures, if the upper die completely covers the upper surface of the workpiece, the upper die will inevitably come into contact with the left and right clamping structures during the downward movement, which may easily cause wear or even damage to the left and right clamping structures.

[0006] Moreover, since the vertical structure of the workpiece is fully stressed when it is bent, the workpiece types in the above-mentioned public documents are clearly only applicable to square tube steel or steel plate (with the steel plate placed vertically). With the development of technology, semi-trailer through beams have gradually used channel steel, I-beam steel and other profiles to replace steel plates and square tube steel (for example, a semi-trailer through beam disclosed in Chinese utility model patent CN202121087517.0 uses channel steel as the workpiece). The through beam processing equipment in the above-mentioned public documents is currently not suitable for processing workpieces with a single web such as I-beam steel and channel steel. Forcing its use may cause the workpiece to bend.

[0007] Currently, existing semi-trailer through-beam forming equipment generally requires manual positioning and placement of profiles. The accuracy requirements for manual placement of profiles are high, and the formed through-beams also have problems such as poor straightness and flatness.

[0008] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0009] The purpose of this invention is to address the shortcomings of existing technologies by providing a semi-trailer through beam forming mold.

[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes a pressing mold and a clamping core mold, both of which are arranged in pairs, wherein:

[0011] The pressing die includes a punch and a die, and the pressing die is used to bend a portion of the workpiece to press the workpiece into a through beam;

[0012] The clamping core mold is disposed between the punch and the die, and the clamping core mold is used to clamp the workpiece and provide support for the force-bearing surface of the workpiece;

[0013] The clamping core mold includes a floating core mold and a supporting core mold arranged in a straight line. The floating core mold is positioned directly opposite the convex and concave positions of the punch and the die of the pressing mold. When the punch is pressed down, it causes the floating core mold to slide against the die.

[0014] Based on the above, the punch is an integral mold used to press the workpiece into shape in one step.

[0015] Based on the above, the supporting core mold is disposed on both sides of the floating core mold, and the floating core mold and the supporting core mold are connected.

[0016] Based on the above, the floating core mold is configured as a protrusion whose bottom end can be tightly embedded into the concave position of the concave mold.

[0017] Based on the above, the supporting core mold is designed as a cuboid, and the punch and the die can respectively fit tightly against the upper and lower bottom surfaces of the supporting core mold.

[0018] Based on the above, it also includes a core mold support, on which the clamping core mold is disposed. The core mold support includes a movable support and a fixed support. The movable support can slide toward the fixed support to drive the clamping core mold to clamp.

[0019] Based on the above, a material ejection rod is provided on the fixed bracket, and the material ejection rod is also provided on the supporting core mold. The end of the material ejection rod can extend and retract outward from the supporting core mold to eject the material.

[0020] Based on the above, the movable bracket is connected to a side-push hydraulic cylinder.

[0021] Based on the above, the core mold support is provided with a guide slide rod, which passes through the floating core mold and is used to guide the sliding of the floating core mold.

[0022] Based on the above, the guide slide rod is inserted through the support core mold to allow the support core mold to slide up and down.

[0023] This utility model has substantial features and advancements compared to existing technologies. Specifically, the semi-trailer through-beam forming mold of this utility model has the following advantages: The mold of this application can be used for various profiles such as channel steel, which are already widely used, as workpieces to be bent. Moreover, when using channel steel or angle steel as workpieces to be bent, two identical channel steels or two identical angle steels can be placed back to back at the designated position of the mold, and working on two workpieces simultaneously can greatly increase production efficiency. Furthermore, after the workpiece is placed on the mold, the clamping core mold clamps the workpiece, making the workpiece upright and improving the accuracy of the workpiece placement position. In addition, the clamping core mold, in conjunction with the pressing mold, can improve the straightness and flatness of the formed through-beam to improve the bending quality. Attached Figure Description

[0024] Figure 1 This is a front view of the overall structure of this utility model;

[0025] Figure 2 This is a front view of the workpiece of this utility model;

[0026] Figure 3 yes Figure 2 A front view of another embodiment of the workpiece;

[0027] Figure 4 This is a side view of the overall structure of this utility model;

[0028] Figure 5 yes Figure 4 Detailed diagram of some of the structures;

[0029] Figure 6 yes Figure 4 Detailed structural diagram of the pressing mold and clamping core mold.

[0030] In the figure, the attached figures are labeled as follows:

[0031] Pressing mold 1, punch 11, die 12, pressing protrusion 13, pressing groove 14, hydraulic top plate 15, bottom plate 16;

[0032] Clamping core mold 2, floating core mold 21, supporting core mold 22, core mold protrusion 23;

[0033] Core mold support 3, movable support 31, fixed support 32, ejector rod 33, side push cylinder 34, guide slide rod 35, ejector telescopic cylinder 36;

[0034] Workpiece 100, web plate 101, flange plate 102. Detailed Implementation

[0035] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0036] Example 1:

[0037] like Figure 1 , Figure 4 As shown, the semi-trailer through beam forming mold of this embodiment includes a pressing mold 1 and a clamping core mold 2. The pressing mold 1 and the clamping core mold 2 are arranged in pairs. The clamping core mold 2 is used to clamp the workpiece 100. The pressing mold 1 is used to bend a part of the workpiece 100 when the clamping mold 2 clamps the workpiece 100 so as to press the workpiece 100 into a through beam.

[0038] In this embodiment, as Figure 2 As shown, the workpiece 100 includes a web 101 and flanges 102 connected to the web 101. The workpiece 100 has only one web 101, and flanges 102 are provided at both the upper and lower edges of the web 101. Both flanges 102 extend to at least one side of the web 101. In other words, in this embodiment, the workpiece 100 is a profile in the form of a channel steel or an I-beam. Specifically, if both flanges 102 of the workpiece 100 extend to the same side of the web 101, it is a channel steel; if both flanges 102 extend to both sides of the web 101, it is an I-beam.

[0039] It should be noted that, generally speaking, the web 101 and the wing 102 of the workpiece 100 are perpendicular to each other. In this embodiment, the perpendicularity of the web 101 and the wing 102 is also taken as an example. However, this is not a limitation on the overall structure of the workpiece 100 and the mold. The web 101 and the wing 102 of the workpiece 100 may not be perpendicular. For example, when the included angle between the web 101 and the wing 102 is an obtuse angle, it can also be used for pressing the workpiece 100 as long as the corresponding overall mold structure is adapted.

[0040] It should be noted that in this embodiment, the workpiece 100 is described as "a profile in the form of channel steel or I-beam steel", which does not mean that the workpiece 100 can only use steel alloy profiles. The description is only for ease of understanding. In this embodiment, the workpiece 100 can also use aluminum alloy profiles or profiles made of other materials.

[0041] In this embodiment, as Figure 2 As shown, when the workpiece 100 is a channel steel or an I-beam, the clamping mandrel 2 can be used to clamp two identical channel steels, or clamp a single channel steel, or clamp a single I-beam. When the clamping mandrel 2 clamps two identical channel steels, the webs 101 of the two channel steels abut each other, and the flanges 102 of the two channel steels face away from each other. At this time, the shape of the two identical channel steels being clamped is similar to that of a single I-beam.

[0042] In this embodiment, as Figure 4 , Figure 5 , Figure 6 As shown, the pressing die 1 includes a punch 11 and a die 12 corresponding to the punch 11. The punch 11 is provided with pressing protrusions 13, and the die 12 is provided with pressing grooves 14 corresponding to the pressing protrusions 13. The number of pressing protrusions 13 on the punch 11 can be set to two, three, or five as needed, so as to press the workpiece 100 into a through beam with two, three, or five bends; of course, this is not a limitation on the number of pressing protrusions 13, and the pressing protrusions 13 can also be set to other numbers as needed; in addition, as needed, such as Figure 1 As shown, the top of the punch 11 may be provided with a hydraulic top plate 15, which is connected to a hydraulic pressing device, and the bottom of the die 12 may be provided with a bottom plate 16.

[0043] Among them, such as Figure 2 , Figure 6 As shown, the workpiece 100 is vertically positioned between the punch 11 and the die 12. Specifically, as the punch 11 presses down, the pressing protrusion 13 presses against a portion of the workpiece 100, pressing this portion into the pressing groove 14. This bending of the portion of the workpiece 100 (including the web 101 and the flange 102) located between the pressing protrusion 13 and the pressing groove 14 is achieved, thereby pressing the workpiece 100 into a through beam.

[0044] Based on the above, such as Figure 2 As shown, when the pressing mold 1 presses the workpiece 100, it covers the wing plate 102. Specifically, after the pressing mold 1 bends a part of the workpiece 100, during the pressure holding process, the upper surface of the wing plate 102 on the upper side of the workpiece 100 is completely covered by the punch 11, while the lower surface of the wing plate 102 on the lower side of the workpiece 100 is completely covered by the die 12. In this way, the flatness of the upper and lower planes of the workpiece 100 can be guaranteed during the pressing process.

[0045] Based on the above, such as Figure 4 , Figure 5 , Figure 6 As shown, the punch 11 is set as an integral mold to press the workpiece 100 into shape in one step, which can further ensure the flatness of the upper and lower planes of the workpiece 100 during the pressing process.

[0046] In this embodiment, the clamping core mold 2 is located between the punch 11 and the die 12, and the clamping direction of the clamping core mold 2 is perpendicular to the pressing direction of the pressing die 1. Before the pressing operation, the clamping core mold 2 first clamps the web plate 101 of the workpiece 100, and then the pressing die 1 presses down to press the workpiece 100 into a through beam.

[0047] Among them, such as Figure 2 , Figure 6 As shown, a pair of clamping mandrels 2 are respectively disposed on the left and right sides of the workpiece 100. The clamping mandrels 2 clamp the web plate 101 of the workpiece 100 from both sides of the web plate 101, so that the workpiece 100 remains upright during the pressing process by the pressing mold 1; and, as Figure 2 As shown, when clamping the workpiece 100, the clamping mandrel 2 provides support for the force-bearing surface of the workpiece 100. Specifically, when clamping the workpiece 100, the clamping mandrel 2 closely adheres to and covers the web plate 101 and the flange plate 102 from the inside of the workpiece 100. This allows the clamping mandrel 2 to support the bending force-bearing surface of the workpiece 100 when it is bent, and at the same time, it acts as a support mold and a pressure transmission pad, ensuring that the bending part of the workpiece 100 will not twist. In the case of the workpiece 100 in this example, when the workpiece 100 uses two abutting channel steels or I-beams, both clamping mandrels 2 on both sides abut against the web plate 101 and the flange plate 102 of the workpiece 100. When the workpiece 100 uses a single channel steel, the clamping mandrel 2 on one side abuts against the web plate 101 and the flange plate 102 of the workpiece 100 from the inside of the channel steel, while the other side only abuts against the web plate 101.

[0048] In this embodiment, as Figure 4 , Figure 5 , Figure 6 As shown, the clamping core mold 2 includes a floating core mold 21 and a supporting core mold 22. The floating core mold 21 and the supporting core mold 22 are arranged in a straight line when not under the pressure of the pressing mold 1, so as to facilitate the placement of the workpiece 100 between the pair of floating core molds 21 and the pair of supporting core molds 22, and then clamped by the pair of floating core molds 21 and the pair of supporting core molds 22.

[0049] In this embodiment, as Figure 4 , Figure 5 , Figure 6As shown, the floating core mold 21 is positioned directly opposite the convex and concave positions of the punch 11 and die 12 of the pressing mold 1. That is, the upper and lower bottom surfaces of the floating core mold 21 are directly opposite the pressing protrusion 13 and the pressing groove 14, respectively. In other words, the floating core mold 21 is located at the bent part of the workpiece 100. The floating core mold 21 can slide along the pressing direction of the pressing mold 1, so that when the pressing protrusion 13 of the punch 11 presses down, it drives the floating core mold 21 to slide against the pressing groove 14 of the die 12. Thus, when the pressing protrusion 13 on the punch 11 presses against the wing plate 102 at the upper end of the workpiece 100, the wing plate 102 deforms, and the pressing protrusion 13 also acts on the floating core mold 21 at the same time, causing the floating core mold 21 to slide downward. The lower surface of the floating core mold 21 also acts on the wing plate 102 at the lower end of the workpiece 100 until the wing plate 102 at the lower end of the workpiece 100 touches the bottom surface of the pressing groove 14 of the die 12. During this process, the floating core mold 21 acts as a pressure transmission pad, transmitting the downward pressure of the punch 11 to the wing plate 102 at the lower end of the workpiece 100. This causes the wing plates 102 at both the upper and lower edges to deform simultaneously when the workpiece 100 is bent, thus ensuring the flatness of the wing plate 102 during deformation and preventing the wing plate 102 from twisting and deforming during bending.

[0050] Based on the above, such as Figure 6 As shown, the floating core mold 21 is designed as a protrusion that can be tightly embedded into the concave position of the die 12 at its bottom end, that is, the bottom end of the floating core mold 21 is provided with a core mold protrusion 23; specifically, the core mold protrusion 23 is a protrusion with the same shape as the pressing protrusion 13, and the lower end face of the core mold protrusion 23 abuts against the wing plate 102 at the lower edge of the workpiece 100. After the core mold protrusion 23 is pressed down, it can press the transverse wing plate at the lower edge of the workpiece 100 into the pressing groove 14 of the die 12; in this way, when the punch 11 is pressed down and when the pressure is held, the flatness of the bent part of the wing plate 102 is further guaranteed.

[0051] The floating core mold 21 functions in this device as follows: the bent portion of the workpiece 100 is clamped by the floating core mold 21 and kept upright; the floating core mold 21 fits and covers the web 101 of the workpiece 100 from the inside, thus preventing the web 101 from being bent and ensuring the straightness of the bent portion; the floating core mold 21 can transmit the downward pressure of the punch 11 to simultaneously bend the wing plates 102 on both the upper and lower edges of the workpiece 100, and the floating core mold 21 is designed as a bottom-fillable insert into the die 12 protrusion (core mold protrusion 23), ensuring the flatness of the bent portion of the wing plate 102.

[0052] Based on the above, such as Figure 4 , Figure 5 , Figure 6As shown, the supporting core mold 22 is located on both sides of the floating core mold 21, that is, the supporting core mold 22 is located on both sides of the bent part of the workpiece 100, that is, the supporting core mold 22 is located on the non-bent part of the workpiece 100; the supporting core mold 22 is generally rectangular, and the punch 11 and the die 12 can respectively fit tightly against the upper and lower bottom surfaces of the supporting core mold 22; when the punch 11 is pressed down, the supporting core mold 22 acts as a supporting pad, so that the wing plates 102 at the upper and lower ends of the workpiece 100 are respectively between the punch 11 and the supporting core mold 22, and between the die 12 and the supporting core mold 22, and the supporting core mold 22 supports the wing plates 102 at the upper and lower ends of the workpiece 100 from the inside; in this way, during the pressing and holding process of the pressing mold 1, the workpiece 100 can be prevented from bending and deforming due to the stress on the bent part of the wing plate 102.

[0053] The supporting mandrel 22 functions in this device as follows: the two sides (non-bent parts) of the workpiece 100 that are bent are clamped by the supporting mandrel 22 and kept upright; the supporting mandrel 22 closely fits and covers the web 101 of the workpiece 100 from the inside, thus preventing the bent part of the web 101 from being subjected to stress and bending deformation, ensuring the overall straightness of the workpiece 100; the supporting mandrel 22 supports the upper and lower wing plates 102 of the workpiece 100 from the inside, preventing bending deformation caused by the bent part of the wing plate 102 being subjected to stress, thus ensuring the overall flatness of the wing plate 102.

[0054] Based on the above, such as Figure 4 As shown, the supporting core mold 22 is located on both sides of the floating core mold 21. The floating core mold 21 and the supporting core mold 22 are continuously arranged along the length direction of the workpiece 100. Specifically, the floating core mold 21 is set at the bending part of the workpiece 100, while the supporting core mold 22 is set at the non-bending part of the workpiece 100. The floating core mold 21 and the supporting core mold 22 abut against each other or have a small gap. The size of the gap can be set according to the flatness of the opposite surfaces of the two, so as not to cause frictional contact between the two. The continuously arranged clamping core mold 2 can maximize the straightness and flatness of the workpiece 100 when it is bent, thus ensuring product quality.

[0055] Based on the above, such as Figure 1 , Figure 4 , Figure 5As shown, it also includes a core mold support 3, on which the clamping core mold 2 is mounted. The core mold support 3 includes a movable support 31 and a fixed support 32. The movable support 31 can slide toward the fixed support 32 to drive the clamping core mold 2 to clamp the workpiece 100. The movable support 31 and the fixed support 32 are respectively located on both sides of the web 101 of the workpiece 100. Pairs of floating core molds 21 and pairs of supporting core molds 22 are respectively mounted on the movable support 31 and the fixed support 32. The movable support 31 is slidably mounted on the base plate 16. The movable support 31 can slide toward or away from the pressing mold 1 to drive the pairs of clamping core molds 2 to move closer or further apart, so that the clamping core molds 2 can clamp or release the workpiece 100. The fixed support 32 can be fixedly mounted on the base plate 16. The floating core mold 21 and the supporting core mold 22 on the fixed support 32 are within the effective pressing range between the punch 11 and the die 12.

[0056] Based on the above, a ejector rod 33 is provided on the fixed bracket 32, and the ejector rod 33 is also provided on the supporting core mold 22. The fixed bracket 32 ​​and the supporting core mold 22 are respectively provided with through holes. One end of the ejector rod 33 can extend and retract outward from the supporting core mold 22 so that the end of the ejector rod 33 can act on the workpiece 100 to eject the material. The other end of the ejector rod 33 is connected to an ejector telescopic cylinder 36. The ejector telescopic cylinder 36 can be fixedly installed on the base plate 16. The ejector telescopic cylinder 36 can be a pneumatic cylinder or an electric telescopic cylinder to quickly complete the ejection.

[0057] Based on the above, the movable bracket 31 is connected to a side-push cylinder 34, which can be fixedly mounted on the base plate 16. The output end of the side-push cylinder 34 is connected to the movable bracket 31, so that the movable bracket 31 can move in the direction toward or away from the fixed bracket 32. Since clamping the core mold 2 requires a large clamping force, the side-push cylinder 34 is preferably a cylinder.

[0058] Based on the above, such as Figure 1 , Figure 4 , Figure 5 As shown, the core mold support 3 is provided with a guide slide rod 35, which passes through the floating core mold 21. The floating core mold 21 can slide up and down along the guide slide rod 35. The extension direction of the guide slide rod 35 is consistent with the downward pressing direction of the punch 11. The guide slide rod 35 is used to guide the sliding of the floating core mold 21. Moreover, the guide slide rod 35 can also pass through the support core mold 22, so that the support core mold 22 can also slide up and down along the guide slide rod 35. This allows the support core mold 22 to slide down a certain distance when it is subjected to the downward pressure of the punch 11. In this way, on the one hand, the support core mold 22 is prevented from rigidly twisting and deforming due to the downward pressure, and on the other hand, a certain gap is ensured between the bottom surface of the support core mold 22 and the top surface of the die 12.

[0059] Example 2:

[0060] The difference between this embodiment and Embodiment 1 is that, in this embodiment, as... Figure 3 As shown, the workpiece 100 has only one web 101, and there is only one flange 102 on both the upper and lower edges of the web 101. The flange 102 extends to at least one side of the web 101. That is to say, the workpiece 100 in this embodiment is set as a profile in the form of T-shaped steel or angle steel. Specifically, if the flange 102 of the workpiece 100 extends to one side of the web 101, it is an angle steel; if the flange 102 of the workpiece 100 extends to both sides of the web 101, it is a T-shaped steel.

[0061] In this embodiment, as Figure 3 As shown, when the workpiece 100 is a T-shaped steel or an angle steel, the clamping mandrel 2 can be used to clamp two identical angle steels, or clamp a single angle steel, or clamp a single T-shaped steel. When the clamping mandrel 2 clamps two identical angle steels, the webs 101 of the two angle steels abut each other, and the flanges 102 of the two angle steels face away from each other. At this time, the shape of the two identical angle steels being clamped is similar to that of a single T-shaped steel.

[0062] In this embodiment, as a difference from Embodiment 1, such as Figure 3 As shown, the height of the floating core mold 21 and the supporting core mold 22 of the clamping core 2 is greater than or equal to the height of the web 101 of the workpiece 100. When the clamping core 2 clamps the workpiece 100, the end of the web 101 is clamped between the pair of clamping cores 2. When the pressing die 1 presses the workpiece 100, the wing plate 102 is located between the punch 11 and the clamping die 2, and the bottom end of the clamping core 2 directly abuts against the die 12. In this way, the straightness and flatness of the workpiece 100 when it is bent can be guaranteed.

[0063] It is worth mentioning that in the two embodiments described above, the workpiece 100 undergoes plastic deformation during the pressing process, and the length reduction of the workpiece 100 caused by bending is extremely small (about a few millimeters) and can be ignored. Therefore, when the clamping core mold 2 clamps the workpiece 100 and the workpiece 100 is pressed into a through beam, the workpiece 100 will not shift from the clamping core mold 2 due to the length reduction.

[0064] According to the above embodiments, the semi-trailer through beam forming mold of this utility model can be used as a workpiece to be bent by various profiles such as channel steel that are currently widely used. Moreover, when using channel steel or angle steel as workpieces to be bent, two identical channel steels or two identical angle steels can be placed back to back at the designated position of the mold, and working on two workpieces at the same time can greatly increase production efficiency. After the workpiece is placed on the mold, the clamping core mold clamps the workpiece to make the workpiece upright, which improves the accuracy of the workpiece placement position. In addition, the clamping core mold, together with the pressing mold, can improve the straightness and flatness of the formed through beam to improve the bending quality.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A molding die for forming a through beam of a semi-trailer, characterized in that: This includes a pressing mold (1) and a clamping core mold (2), both of which are arranged in pairs. The pressing die (1) includes a punch (11) and a die (12), and the pressing die (1) is used to press and bend a portion of the workpiece to press the workpiece into a through beam; The clamping core mold (2) is disposed between the punch (11) and the die (12), and the clamping core mold (2) is used to clamp the workpiece and provide support for the force-bearing surface of the workpiece; The clamping core mold (2) includes a floating core mold (21) and a supporting core mold (22) arranged in a straight line. The floating core mold (21) is positioned opposite to the convex and concave positions of the punch (11) and the die (12) of the pressing mold (1). When the punch (11) is pressed down, it causes the floating core mold (21) to slide against the die (12).

2. The semi-trailer through-beam forming mold according to claim 1, characterized in that: The punch (11) is an integral mold used to press the workpiece into shape in one step.

3. The semi-trailer through-beam forming mold according to claim 1, characterized in that: The supporting core mold (22) is located on both sides of the floating core mold (21), and the floating core mold (21) and the supporting core mold (22) are connected.

4. The semi-trailer through-beam forming mold according to claim 1, characterized in that: The floating core mold (21) is configured as a protrusion with its bottom end able to fit tightly into the concave position of the concave mold (12).

5. The semi-trailer through-beam forming mold according to claim 1, characterized in that: The supporting core mold (22) is designed as a cuboid, and the punch (11) and the die (12) can respectively fit tightly against the upper and lower bottom surfaces of the supporting core mold (22).

6. The semi-trailer through-beam forming mold according to claim 1, characterized in that: It also includes a core mold support (3), the clamping core mold (2) is disposed on the core mold support (3), the core mold support (3) includes a movable support (31) and a fixed support (32), the movable support (31) can slide toward the fixed support (32) to drive the clamping core mold (2) to clamp.

7. The semi-trailer through-beam forming mold according to claim 6, characterized in that: The fixed bracket (32) is provided with a material ejection rod (33), which is also provided on the support core mold (22). The end of the material ejection rod (33) can extend and retract outward from the support core mold (22) to eject the material.

8. The semi-trailer through-beam forming mold according to claim 6, characterized in that: The movable bracket (31) is connected to a side-push cylinder (34).

9. The semi-trailer through-beam forming mold according to claim 6, characterized in that: The core mold support (3) is provided with a guide slide rod (35), which passes through the floating core mold (21) and is used to guide the sliding of the floating core mold (21).

10. The semi-trailer through-beam forming mold according to claim 9, characterized in that: The guide slide rod (35) passes through the support core mold (22) to allow the support core mold (22) to slide up and down.

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