A forging clamping device for metal blanks

Abstract

The present invention provides a forging clamping device for metal blanks, which relates to the field of forging jigs and includes a bracket and two chains with their ends fixed to the inner wall of the bracket. There is a gap between the two chains; two chain sleeve parts sleeved on the two chains and facing each other are arranged in the bracket. Among them, there is a gap between the chain sleeve parts, and the gap between the chain sleeve parts and the gap between the two chains form a clamping area for clamping the blank; traction parts that tightly press the chains and are respectively connected to the two chain sleeve parts are arranged on both sides of the clamping area. The traction parts pull the chain sleeve parts to gather towards the blank, so that the clamping area for clamping the blank is always adapted to the blank. In the present invention, the chains can conformably contact blanks of different styles. Accordingly, the chains are controlled by the sleeve box to make the chains contact the blank to the greatest extent, and the blank is effectively clamped during the gathering of the sleeve box towards the blank.

Description

Technical Field

[0001] The present invention relates to the field of forging fixtures, and in particular to a forging clamping device for metal blanks. Background Art

[0002] Forging refers to a process in which metal is forged under a red-hot state by equipment such as pneumatic hammers or presses, so that the fiber structure of the blank is consistent with the shape of the blank.

[0003] Using a fixture to flexibly fix the blank and making any side of the blank face the contact direction of the pneumatic hammer or press is a common blank fixing method in forging work. For the use of the fixture, currently, an adapter fixture suitable for the shape of the blank needs to be configured, that is, the jaws of the fixture firmly clamp the blank that fits it, and then the blank can be flexibly controlled.

[0004] According to the above description, the primary requirement for maintaining good clamping function is to configure a variety of adapter fixtures in the forging station to adapt to a variety of different styles of blanks. However, considering the actual situation, it is obviously inappropriate. The reasons are that it is difficult to effectively classify a variety of adapter fixtures, and secondly, it is difficult to identify the adapter fixture suitable for the blank among the fixture group. Therefore, from the actual application, it is very necessary to propose a forging clamping device that can effectively clamp different styles of blanks. Summary of the Invention

[0005] The purpose of the present invention is to provide a forging clamping device for metal blanks to solve the technical problems that the primary requirement for maintaining good clamping function is to configure a variety of adapter fixtures in the forging station to adapt to a variety of different styles of blanks. However, considering the actual situation, it is obviously inappropriate. The reasons are that it is difficult to effectively classify a variety of adapter fixtures, and secondly, it is difficult to identify the adapter fixture suitable for the blank among the fixture group.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve:

[0007] A forging clamping device for metal blanks includes a bracket and two chains fixed to the inner wall of the bracket at the ends, with a gap between the two chains;

[0008] Two chain sleeve parts sleeved on the two chains and facing each other are arranged in the bracket. Among them, there is a gap between the chain sleeve parts, and the gap between the chain sleeve parts and the gap between the two chains form a clamping area for clamping the blank;

[0009] Traction parts that tightly press the chains and are respectively connected to the two chain sleeve parts are arranged on both sides of the clamping area. The traction parts pull the chain sleeve parts to gather towards the blank, so that the clamping area for clamping the blank is always adapted to the blank.

[0010] Preferably, the traction part includes a first side bar and a second side bar respectively arranged on both sides of the chain sleeve part. Among them, the second side bar has a through channel, and the second side bar and the first side bar at another chain sleeve part are on the same side;

[0011] Install a pull rod on the first side bar at another chain sleeve part, which penetrates the second side bar and extends outward from the second side bar. Pull along the extension direction of the pull rod to press the pull rod against the chain and make the other chain sleeve part connected to the pull rod gather towards the blank.

[0012] Preferably, the traction part is a spring, and both ends of the spring are respectively fixed on the end sides of the two chain sleeve parts, and the spring is located outside the chain and presses against the chain.

[0013] Preferably, the chain sleeve part includes a sleeve box and two chain channels arranged in the sleeve box. The two chain channels are sleeved with corresponding chains so that the chains do not interfere with each other inside the sleeve box.

[0014] Preferably, the chain sleeve part further includes elastic sheet grooves arranged on both sides of the sleeve box. One side groove end of the elastic sheet groove is provided with an elastic sheet that expands outward, and a hole that communicates the elastic sheet groove and the chain channel is arranged between the elastic sheet groove and the chain channel;

[0015] Install a stabbing rod on the side of the elastic sheet facing the elastic sheet groove;

[0016] A sliding sleeve that slides on the sleeve box is sleeved outside the sleeve box. The sliding sleeve slides forward or backward at the sleeve box, so that the stabbing rod is inserted into the chain through the hole or the stabbing rod is pulled out from the chain.

[0017] Preferably, the hole is located in the moving path of the stabbing rod.

[0018] Preferably, a pulling part extending outward from the bracket is installed at the chain sleeve part.

[0019] Preferably, the pulling part is a pull rod, and the pull rod is installed at the other end of the first side bar and extends outward from the bracket.

[0020] Preferably, the pulling part is a curved pull rod, and both ends of the curved pull rod are installed at the sliding sleeve and extend outward from the bracket.

[0021] The beneficial effects of the present invention are:

[0022] 1. By placing the blank between two chains and gathering the two sleeve boxes towards the blank, the present invention enables the chains to contact the blank to the greatest extent and applies corresponding clamping force to the blank to clamp the blank.

[0023] 2. In the present invention, the chain can conformably contact workpieces of different styles. Accordingly, the chain is controlled by the nested box to maximize the contact with the workpiece, and the workpiece is effectively clamped during the process of the nested box converging towards the workpiece. Brief Description of the Drawings

[0024] Figure 1 It is a schematic structural view of a forging clamping device for a metal workpiece of the present invention;

[0025] Figure 2 It is a schematic structural view of the present invention after removing the workpiece;

[0026] Figure 3 It is a schematic combined structural view of the chain, the nested chain part and the traction part in the present invention;

[0027] Figure 4 It is a schematic structural view of the nested chain part, the traction part and the bracket in the present invention;

[0028] Figure 5 It is a schematic structural view of the forging clamping device in Embodiment 2 of the present invention;

[0029] Figure 6 It is a schematic structural view of the forging clamping device in Embodiment 2 after removing the workpiece;

[0030] Figure 7 It is a schematic combined structural view of the chain, the nested chain part and the traction part in the forging clamping device in Embodiment 2;

[0031] Figure 8 It is a schematic combined structural view of the nested chain part and the traction part in the forging clamping device in Embodiment 2;

[0032] Figure 9 It is a schematic combined sectional view of the nested chain part and the chain in the forging clamping device in Embodiment 2;

[0033] Reference Signs: 1, bracket; 2, nested chain part; 21, nested box; 22, chain channel; 23, elastic piece; 24, hole; 25, poking rod; 26, elastic piece groove; 27, sliding sleeve; 3, chain; 4, pulling member; 5, traction part; 51, pull rod; 52, first side bar; 53, second side bar. Detailed Embodiment

[0034] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only the preferred embodiments of the present invention, not all of them. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative efforts all belong to the protection scope of the present invention.

[0035] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0036] Embodiment 1

[0037] In this embodiment, a forging clamping device for metal billets is proposed, which includes a bracket 1 and two chains 3 fixedly connected to the inner wall of the bracket 1 at their ends, with a gap between the two chains 3; two chain sleeve parts 2 are arranged in the bracket 1 and sleeved on the two chains 3 and facing each other directly, wherein there is a gap between the chain sleeve parts 2, and the gap between the chain sleeve parts 2 to the gap between the two chains 3 forms a clamping area for clamping the billet.

[0038] Traction parts 5 that tightly press the chains 3 and are respectively connected to the two chain sleeve parts 2 are arranged on both sides of the clamping area. The traction parts 5 pull the chain sleeve parts 2 to gather towards the billet, so that the clamping area for clamping the billet always adapts to the billet.

[0039] Hereinafter, the traction part 5 and the chain sleeve part 2 used in this embodiment will be further described:

[0040] In this embodiment, the traction part 5 includes a first side bar 52 and a second side bar 53 respectively arranged on both sides of the chain sleeve part 2, wherein the second side bar 53 has a through channel; thus, please refer to Figure 3 , the second side bar 53 and the first side bar 52 at another chain sleeve part 2 are on the same side;

[0041] Accordingly, a pull rod 51 is installed on the first side bar 52 at another chain sleeve part 2, which penetrates through the second side bar 53 and extends outward from the second side bar 53. Pull the pull rod 51 along the extending direction of the pull rod 51, so that the pull rod 51 tightly presses the chain 3 and makes the other chain sleeve part 2 connected to the pull rod 51 gather towards the billet;

[0042] In this embodiment, the key to controlling the two chain sleeve parts 2 to gather towards the billet lies in enabling two operators to independently pull the corresponding pull rods 51, that is, converting the pulling force into the force for the chain sleeve parts 2 to move to the two chains 3 and gather towards the billet, so that the chain 3 passing through the chain sleeve parts 2 contacts the billet to the greatest extent and obtains sufficient clamping force, so as to clamp the billet freely when carrying the bracket 1.

[0043] Explanation on the pull rod 51 tightly pressing the chain 3:

[0044] Please refer to Figure 1 , when the chain 3 is in close contact with the billet, the pull rod 51 tightly presses on the outer side of the chain 3. Thus, in this embodiment, the clamping force on the billet is jointly provided by the chain 3 and the pull rod 51.

[0045] In this embodiment, the chain sleeve portion 2 includes a sleeve box 21 and two chain channels 22 provided in the sleeve box 21. The two chain channels 22 are sleeved with corresponding chains 3, so that the chains 3 do not interfere with each other inside the sleeve box 21.

[0046] Please refer to Figure 1-4 , in this embodiment, a forging clamping device capable of clamping various types of blank parts is proposed. The forging clamping device combines components such as a bracket 1, a sleeve box 21, a chain channel 22, a chain 3, a pull rod 51, a first side bar 52, and a second side bar 53. The purpose is to place the blank part between the two chains 3, and the two sleeve boxes 21 gather towards the blank part, so that the chains 3 contact the blank part to the greatest extent, and apply corresponding clamping force to the blank part to clamp the blank part.

[0047] Please refer to Figure 1 For the clamped oval blank part, the two chains 3 are almost completely in contact with the blank part. Therefore, two operators apply a certain force to the corresponding pull rods 51 to clamp the oval-shaped column. In addition, blank parts such as square blank parts, spherical blank parts, and even irregular blank parts (not marked in the figure) all have good clamping effects.

[0048] Embodiment 2

[0049] In this embodiment, a forging clamping device for metal blank parts is proposed, which includes a bracket 1 and two chains 3 with ends fixed to the inner wall of the bracket 1. There is a gap between the two chains 3; two chain sleeve portions 2 sleeved on the two chains 3 and facing each other are provided in the bracket 1. Among them, there is a gap between the chain sleeve portions 2, and the gap between the chain sleeve portions 2 and the gap between the two chains 3 form a clamping area for clamping the blank part;

[0050] Traction portions 5 that tightly press the chains 3 and are respectively connected to the two chain sleeve portions 2 are provided on both sides of the clamping area. The traction portions 5 pull the chain sleeve portions 2 to gather towards the blank part, so that the clamping area for clamping the blank part always adapts to the blank part.

[0051] Hereinafter, the traction portion 5 and the chain sleeve portion 2 used in this embodiment will be further described:

[0052] In Embodiment 1, the force for gathering the chain sleeve portion 2 towards the blank part comes from two operators, that is, the two operators pull the corresponding pull rods 51 to control the movement of the chain sleeve portion 2. Different from Embodiment 1, in this embodiment, the traction portion 5 is a spring. The two ends of the spring are respectively fixed to the end sides of the two chain sleeve portions 2, and the spring is located outside the chain 3 and tightly presses the chain 3. That is, the spring is used to pull the two chain sleeve portions 2 to gather towards the blank part. In addition, the spring has the same function as the pull rod 51, that is, tightly pressing the chain 3, so that the clamping force on the blank part is provided jointly by the chain 3 and the spring.

[0053] In this embodiment, the function of the chain sleeve portion 2 is further expanded. That is, the chain sleeve portion 2 is no longer limited to adapting the clamping area to the blank, but can also control the size of the clamping area according to specific requirements. For this, please refer to Figure 8 and Figure 9 :

[0054] First, the chain sleeve portion 2 includes a sleeve box 21 and two chain channels 22 provided in the sleeve box 21. The two chain channels 22 are sleeved with corresponding chains 3 so that the chains 3 do not interfere with each other inside the sleeve box 21;

[0055] In addition, the chain sleeve portion 2 further includes elastic piece grooves 26 provided on both sides of the sleeve box 21. For this, please refer to Figure 9 , one end of the elastic piece groove 26 is provided with an elastic piece 23 that expands outward, and a hole 24 that communicates the elastic piece groove 26 and the chain channel 22 is provided between the elastic piece groove 26 and the chain channel 22;

[0056] Please refer to Figure 9 , a poking rod 25 is installed on the side of the elastic piece 23 facing the elastic piece groove 26 (the hole 24 is located in the moving path of the poking rod 25). A sliding sleeve 27 that slides on the sleeve box 21 is sleeved outside the sleeve box 21. The sliding sleeve 27 is restricted at the sleeve box 21, that is, the sliding sleeve 27 cannot slip off from the sleeve box 21. The sliding sleeve 27 slides forward or backward at the sleeve box 21, so that the poking rod 25 is inserted into the chain 3 through the hole 24 or the poking rod 25 is pulled out from the chain 3.

[0057] For how the chain sleeve portion 2 controls the size of the clamping area in this embodiment, please refer to the following description:

[0058] ① When it is necessary to control the size of the clamping area

[0059] Push the sliding sleeve 27 to squeeze the elastic piece 23 by the sliding sleeve 27, so that the elastic piece 23 retracts into the elastic piece groove 26. During the retraction of the elastic piece 23, the poking rod 25 fixed to the elastic piece 23 enters the chain channel 22 through the hole 24 and gets stuck in the chain 3, so that the chain 3 cannot move further relative to the sleeve box 21, thereby controlling the size of the clamping area.

[0060] ② Release the control

[0061] Pull the sliding sleeve 27 in the reverse direction to release the extrusion of the elastic piece 23 by the sliding sleeve 27, so that the elastic piece 23 resets, and pull out the poking rod 25 connected to the elastic piece 23 from the hole 24, thereby releasing the restriction of the poking rod 25 on the chain 3.

[0062] Please refer to Figure 5-9, in this embodiment, a forging clamping device capable of clamping various types of blanks is proposed. This forging clamping device combines components such as a bracket 1, a sleeve box 21, a chain channel 22, a leaf spring 23, a hole 24, a punching rod 25, a leaf spring groove 26, a sliding sleeve 27, a chain 3, and a spring. The aim is to place the blank between two chains 3, and use the spring to pull two sleeve boxes 21 towards the blank to gather them, so that the chains 3 contact the blank to the greatest extent, and apply corresponding clamping force to the blank to clamp the blank. In addition, to meet other requirements during the forging of the blank, for example, only continuously forging a certain part of the blank, the size of the clamping area can be controlled through the chain sleeve part 2 used in this embodiment to strongly clamp the blank. Of course, this function is not limited to this requirement, and it can also be used freely according to the specific usage situation.

[0063] In both Embodiment 1 and Embodiment 2, a pulling member 4 is arranged at the chain sleeve part 2;

[0064] Please refer to Figure 1 , in Embodiment 1, the pulling member 4 is a pulling rod, which is installed at the other end of the first side bar 52 and extends outward from the bracket 1. In this embodiment, the function of the pulling member 4 is for reset, that is, to pull the sleeve box 21, so that the effective contact area of the chain 3 with the blank decreases, and the clamping of the blank is released.

[0065] Please refer to Figure 5 and Figure 9 , in Embodiment 2, the pulling member 4 is a curved pulling rod, and both ends of the curved pulling rod are installed at the sliding sleeve 27 and extend outward from the bracket 1. In this embodiment, the function of the pulling member 4 is not only to pull the sleeve box 21 away from the blank, but also to control the movement of the sliding sleeve 27, that is, to push the sliding sleeve 27 by the pulling member 4 to squeeze the leaf spring 23, or to pull the sliding sleeve 27 to release the extrusion of the leaf spring 23.

[0066] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0067] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A forging clamping device for metal blanks, characterized in that: It includes a bracket (1) and two chains (3) with their ends fixed to the inner wall of the bracket (1), and there is a gap between the two chains (3); Two chain sleeves (2) sleeved on the two chains (3) and facing each other are arranged in the bracket (1). Among them, there is a gap between the chain sleeves (2), and the gap between the chain sleeves (2) to the gap between the two chains (3) forms a clamping area for clamping the blank; Traction parts (5) pressing against the chains (3) and respectively connected to the two chain sleeves (2) are arranged on both sides of the clamping area. The traction parts (5) pull the chain sleeves (2) to gather towards the blank, so that the clamping area for clamping the blank always adapts to the blank; The traction part (5) is a spring. The two ends of the spring are respectively fixed to the end sides of the two chain sleeves (2), and the spring is located outside the chain (3) and presses against the chain (3); The chain sleeve (2) includes a sleeve box (21) and two chain channels (22) arranged in the sleeve box (21). The two chain channels (22) are sleeved on the corresponding chains (3) so that there is no interference between the chains (3) and inside the sleeve box (21); The chain sleeve (2) further includes elastic sheet grooves (26) arranged on both sides of the sleeve box (21). One side groove end of the elastic sheet groove (26) is provided with an elastic sheet (23) that expands outwards, and a hole (24) that connects the elastic sheet groove (26) and the chain channel (22) is arranged between the elastic sheet groove (26) and the chain channel (22); A stabbing rod (25) is installed on the side of the elastic sheet (23) facing the elastic sheet groove (26); A sliding sleeve (27) sliding on the sleeve box (21) is sleeved outside the sleeve box (21). The sliding sleeve (27) slides forward or backward at the sleeve box (21) so that the stabbing rod (25) is inserted into the chain (3) through the hole (24) or the stabbing rod (25) is pulled out from the chain (3); The hole (24) is located in the moving path of the stabbing rod (25); A pulling member (4) extending outwards from the bracket (1) is installed at the chain sleeve (2).

2. The forging clamping device for metal blanks according to claim 1, characterized in that: The pulling member (4) is a curved pulling rod. The two ends of the curved pulling rod are installed at the sliding sleeve (27) and extend outwards from the bracket (1).

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