Pressing device

Abstract

The utility model discloses a material pressing device which comprises a body, at least two pressing blocks movably matched with the body, a pressing head arranged opposite to the at least two pressing blocks and elastic pieces connected between the pressing blocks and the pressing head, and the elastic pieces correspond to the at least two pressing blocks respectively. The at least two pressing blocks respectively have a locking state and an unlocking state relative to the body; when the pressing block is in a locking state, the body can compress the elastic piece through the pressing block, so that the pressing head generates pressure far away from the direction of the body; and when the pressing block is in an unlocking state, the elastic piece is always in a free state. Therefore, during use, part or all of the pressing blocks can be in a locked state according to the thickness of the plate and the attaching state of the plate and the machining platform, so that the elastic pieces with the corresponding number are compressed, different pressures are provided, and the adjustability of the pressure of the material pressing device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining, and particularly relates to a blank holding device. Background Art

[0002] CNC (Computer Numerical Control) machining is an important automated machining technology in modern manufacturing. When machining a product by CNC, the product usually needs to be placed on a machining platform and then subsequent cutting machining and the like are carried out on the product. For a plate, it is usually necessary to ensure that the thickness of each part is uniform after the plate is placed on the machining platform to ensure the machining accuracy of the plate.

[0003] In the prior art, before machining a product, if the plate does not fit well with the machining platform, it is easy to cause the problem of uneven thickness. The end face of the original plate material is not cut flat or the product is also caused to have uneven thickness after being placed on the machining platform due to side clamping. Before CNC machining, if the method of manually hammering the blank is used to hammer the plate, the thickness of each part of the plate can be made uniform before machining, but manual hammering may be omitted and the hammering force is uncontrollable, affecting the machining accuracy of the product.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a blank holding device. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a blank holding device, which can solve the problems of uneven thickness of the plate after being placed on the machining platform and uncontrollable hammering force.

[0006] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:

[0007] A blank holding device includes a body, at least two pressing blocks movably matched with the body, a pressing head oppositely arranged with the at least two pressing blocks, and elastic members connected between the pressing blocks and the pressing head, and the elastic members are respectively arranged corresponding to the at least two pressing blocks; the at least two pressing blocks respectively have a locked state and an unlocked state relative to the body; wherein,

[0008] When the pressing block is in the locked state, the body can compress the elastic member through the pressing block, so that the pressing head generates a pressure in the direction away from the body;

[0009] When the pressing block is in the unlocked state, the elastic member is always in a free state.

[0010] In one or more embodiments of the utility model, the body is provided with through grooves corresponding to the number of the pressing blocks along its extending direction, and the pressing blocks are slidably arranged in the through grooves;

[0011] The blank holding device further includes a locking member cooperating with the pressing block. The locking member can be operatively used to limit the pressing block within the through groove or slide relative to the through groove, so that the pressing block is in a locked state or an unlocked state.

[0012] In one or more embodiments of the present invention, the body is provided with a through hole communicating with the through groove. The locking member includes a screw threadedly connected to the through hole, and the screw can abut against or away from the pressing block through the through hole.

[0013] In one or more embodiments of the present invention, the body protrudes with a first limiting portion at one end of the through groove close to the pressing head, and the pressing block is provided with a second limiting portion at one end close to the pressing head. When the pressing block slides along the through groove towards the direction close to the pressing head, the first limiting portion and the second limiting portion can cooperate and abut against each other to limit the pressing block from detaching from the through groove.

[0014] In one or more embodiments of the present invention, the at least two pressing blocks are circumferentially and equidistantly arranged with the axis of the body as the center line.

[0015] In one or more embodiments of the present invention, the blank holding device further includes a guide rod. The pressing block is axially provided with a sliding hole, and one end of the guide rod slidably penetrates into the sliding hole, and the other end is fixedly connected to the pressing head.

[0016] In one or more embodiments of the present invention, a limiting ring is fixedly installed at one end of the guide rod extending into the pressing block. The limiting ring abuts against the end of the pressing block away from the pressing head to limit the guide rod from detaching from the pressing block.

[0017] In one or more embodiments of the present invention, a fastener for fixedly connecting the guide rod and the pressing head is further included.

[0018] In one or more embodiments of the present invention, a linear bearing is installed in the sliding hole, and the guide rod slidably penetrates through the linear bearing;

[0019] And / or, the elastic member includes a compression spring, and the guide rod penetrates through the compression spring.

[0020] In one or more embodiments of the present invention, a soft buffer block is further fixed at one end of the pressing head away from the elastic member;

[0021] And / or, a transfer rod is fixedly connected to one side of the body away from the pressing head.

[0022] Compared with the prior art, in the material pressing device of the utility model, when the pressing block is in a locked state, the main body can compress the elastic member through the pressing block, so that the pressing head generates pressure away from the main body, thereby completing the hammering of the plate. When the pressing block is in an unlocked state, the elastic member is always in a free state, and the elastic member does not apply pressure to the pressing head. Therefore, when using the material pressing device, part or all of the pressing blocks can be locked according to the thickness of the plate and the fit between the plate and the processing platform, so that the corresponding number of elastic members are compressed, thereby providing pressures of different sizes, thereby improving the adjustability of the pressure of the material pressing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a structural schematic diagram of a material pressing device in one embodiment of the utility model;

[0025] Figure 2 It is a cross-sectional schematic diagram of a material pressing device in one embodiment of the utility model;

[0026] Figure 3 for Figure 2 Enlarged schematic diagram at point A in the middle.

[0027] Description of main reference numerals:

[0028] 1. Main body; 11. Through groove; 12. Through hole; 13. First limiting part; 2. Pressing block; 21. Second limiting part; 22. Sliding hole; 3. Pressing head; 4. Elastic member; 5. Locking member; 6. Guide rod; 61. Limiting ring; 62. Fastener; 7. Linear bearing; 8. Buffer block; 9. Adapter rod. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] Reference Figure 1 and Figure 2, in an embodiment of the present utility model, the blank holding device includes a body 1, at least two pressing blocks 2 movably engaged with the body 1, a pressing head 3 disposed opposite to the at least two pressing blocks 2, and an elastic member 4 connected between the pressing blocks 2 and the pressing head 3. The elastic member 4 is respectively provided corresponding to the at least two pressing blocks 2; the above-mentioned at least two pressing blocks 2 respectively have a locked state and an unlocked state relative to the body 1;

[0031] Wherein, when the pressing block 2 is in the locked state, the body 1 can compress the elastic member 4 through the pressing block 2, so that the pressing head 3 generates a pressure in the direction away from the body 1; when the pressing block 2 is in the unlocked state, the elastic member 4 is always in a free state.

[0032] Therefore, when operating the blank holding device to press the plate on the CNC processing platform, the body 1 is first fixedly connected to an external machine platform for providing pressure, and then an appropriate number of pressing blocks 2 are selected to be locked or unlocked according to the thickness state of the plate and the fitting state between the plate and the processing platform, so that the corresponding number of elastic members 4 are compressed, and further the pressing head 3 presses the plate with an appropriate pressure. By pressing different positions of the plate with the blank holding device, it is possible to make the plate fit the processing platform as much as possible, and make the thickness of each part of the plate more uniform after it fits the processing platform, thus ensuring the subsequent processing accuracy of the plate.

[0033] Refer to Figure 1 , in this embodiment, a transfer rod 9 is fixedly connected to a surface of the body 1 away from the pressing head 3, and the transfer rod 9 is fixedly connected to an external machine platform for providing pressure.

[0034] Refer to Figure 2 , the body 1 is provided with through grooves 11 corresponding to the number of the pressing blocks 2 along its extending direction, and the pressing blocks 2 are slidably inserted into the through grooves 11. The blank holding device further includes a locking member 5 cooperated with the pressing blocks 2, and the locking member 5 can be operated to limit the pressing blocks 2 in the through grooves 11 or slide relative to the through grooves 11, so that the pressing blocks 2 are in a locked state or an unlocked state.

[0035] Wherein, when some of the pressing blocks 2 are in the unlocked state, at this time, when the body 1 is driven to move, these pressing blocks 2 in the unlocked state slide in the through grooves 11, and the corresponding elastic members 4 also pass through the through grooves 11 accordingly, so that the elastic members 4 are always in a non-compressed free state.

[0036] Refer to Figure 2 and Figure 3 , the body 1 is provided with through holes 12 communicating with the through grooves 11, and the locking member 5 includes a screw threadedly connected to the through holes 12, and the screw can abut against or away from the pressing blocks 2 through the through holes 12. Therefore, by whether the screw abuts against the pressing blocks 2, the pressing blocks 2 can be limited in the through grooves 11 or slide relative to the through grooves 11, so as to facilitate adjusting the pressing blocks 2 to be in a locked state or an unlocked state.

[0037] It can be understood that in other embodiments, the locking member 5 can also be a pin, and a limiting hole is provided at the corresponding position of the pressing block 2. When the pin is inserted into the through hole 12 and the limiting hole, the pressing block 2 can be limited within the through groove 11. When the pin is away from the limiting hole, the pressing block 2 can slide relative to the through groove 11.

[0038] Referring to Figure 2 and Figure 3 , a first limiting portion 13 is convexly provided at one end of the through groove 11 of the main body 1 close to the pressing head 3, and a second limiting portion 21 is provided at one end of the pressing block 2 close to the pressing head 3. When the pressing block 2 slides along the through groove 11 towards the direction close to the pressing head 3, the first limiting portion 13 and the second limiting portion 21 can be cooperatively abutted to limit the pressing block 2 from disengaging from the through groove 11. In this embodiment, the first limiting portion 13 is provided as a convex block, and the second limiting portion 21 is provided as a groove. Therefore, when the pressing block 2 is in the unlocked state, the pressing block 2 can slide adaptively within the through groove 11, and due to the limitation of the first limiting portion 13 and the second limiting portion 21, the pressing block 2 will not disengage from the through groove 11.

[0039] Referring to Figure 1 , further, at least two pressing blocks 2 are circumferentially and equidistantly arranged with the axis of the main body 1 as the center line. In this embodiment, four pressing blocks 2 are taken as an example, which is not a limitation on the number of pressing blocks 2 in the blanking device of the present application. In other embodiments, the number of pressing blocks 2 can also be two, three, five or even more.

[0040] Referring to Figure 2 , the blanking device further includes a guide rod 6. A sliding hole 22 is axially formed in the pressing block 2, and one end of the guide rod 6 is slidably inserted into the sliding hole 22, and the other end is fixedly connected to the pressing head 3. The guide rod 6 can guide the main body 1 and the pressing block 2 to move towards the direction of compressing the elastic member 4.

[0041] Referring to Figure 2 and Figure 3 , a limiting ring 61 is fixedly installed at one end of the guide rod 6 extending into the pressing block 2. The limiting ring 61 abuts against the end of the pressing block 2 away from the pressing head 3 to limit the guide rod 6 from disengaging from the pressing block 2. In this embodiment, the limiting ring 61 is fixedly connected to the guide rod 6 by a screw. When the guide rod 6 slides relative to the pressing block 2, the limiting ring 61 can limit the guide rod 6 from disengaging from the pressing block 2.

[0042] Referring to Figure 2 , the blanking device further includes a fastener 62 for fixedly connecting the guide rod 6 and the pressing head 3. In this embodiment, a fixing hole is formed in the pressing head 3. The fastener 62 includes a screw, the screw is fixed in the fixing hole, and the screw is threadedly connected to one end of the guide rod 6 close to the pressing head 3.

[0043] Therefore, when the pressing block 2 is in a locked state, the body 1 drives the pressing block 2 to move, and the guide rod 6 can slide relative to the pressing block 2 to guide the pressing block 2 to move in the direction of the compression elastic member 4. When the pressing block 2 is in an unlocked state, the pressing block 2 can slide in the through slot 11 adaptively, and the guide rod 6 corresponding to the pressing block 2 can also slide in the sliding hole 22 adaptively, and the pressing block 2 will not be separated from the through slot 11, and the guide rod 6 will not be separated from the sliding hole 22.

[0044] Reference Figure 3 In an optional embodiment, in order to reduce the friction between the guide rod 6 and the pressure block 2, a linear bearing 7 is installed in the sliding hole 22, and the guide rod 6 is slidably inserted into the linear bearing 7.

[0045] Reference Figure 1 In this embodiment, the elastic member 4 includes a compression spring, and the guide rod 6 is inserted into the compression spring. A soft buffer block 8 is also fixed to the end of the pressure head 3 away from the elastic member 4. The buffer block 8 can avoid the possibility of damage to the plate due to hard contact between the pressure head 3 and the plate.

[0046] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A blank holding device, characterized in that, It includes a main body (1), at least two pressing blocks (2) movably cooperating with the main body (1), a pressing head (3) oppositely arranged with respect to the at least two pressing blocks (2), and elastic members (4) connected between the pressing blocks (2) and the pressing head (3), and the elastic members (4) are respectively arranged corresponding to the at least two pressing blocks (2); the at least two pressing blocks (2) respectively have a locked state and an unlocked state relative to the main body (1); wherein, When the pressing block (2) is in the locked state, the main body (1) can compress the elastic member (4) through the pressing block (2) so that the pressing head (3) generates a pressure in a direction away from the main body (1); When the pressing block (2) is in the unlocked state, the elastic member (4) is always in a free state.

2. The blank holding device according to claim 1, wherein, The main body (1) is provided with through grooves (11) corresponding to the number of the pressing blocks (2) along its extending direction, and the pressing blocks (2) are slidably inserted into the through grooves (11); The pressing device further includes a locking member (5) cooperating with the pressing block (2), and the locking member (5) can be operatively used to limit the pressing block (2) in the through groove (11) or slide relative to the through groove (11) so that the pressing block (2) is in the locked state or the unlocked state.

3. The blank holding device according to claim 2, characterized in that, The main body (1) is provided with a through hole (12) communicating with the through groove (11), and the locking member (5) includes a screw threadedly connected to the through hole (12), and the screw can abut against or away from the pressing block (2) through the through hole (12).

4. The blank holding device according to claim 2, wherein, The main body (1) protrudes with a first limiting portion (13) at one end of the through groove (11) close to the pressing head (3), and the pressing block (2) is provided with a second limiting portion (21) at one end close to the pressing head (3). When the pressing block (2) slides along the through groove (11) in a direction close to the pressing head (3), the first limiting portion (13) and the second limiting portion (21) can cooperate and abut against each other to limit the pressing block (2) from disengaging from the through groove (11).

5. The blank holding device according to claim 2, characterized in that, The at least two pressing blocks (2) are circumferentially and equally spaced with the axis of the main body (1) as the center line.

6. The blank holder device according to claim 2, wherein, The pressing device further includes a guide rod (6). The pressing block (2) is axially provided with a sliding hole (22), and one end of the guide rod (6) is slidably inserted into the sliding hole (22), and the other end is fixedly connected to the pressing head (3).

7. The blank holder device according to claim 6, characterized in that, A limiting ring (61) is fixedly installed at one end of the guide rod (6) extending into the pressing block (2), and the limiting ring (61) abuts against the end of the pressing block (2) away from the pressing head (3) to limit the guide rod (6) from disengaging from the pressing block (2).

8. The blank holding device according to claim 6, wherein, It further includes a fastener (62) fixedly connecting the guide rod (6) and the pressing head (3).

9. The blank holding device according to claim 6, wherein A linear bearing (7) is installed in the sliding hole (22), and the guide rod (6) is slidably inserted into the linear bearing (7); And / or, the elastic member (4) includes a compression spring, and the guide rod (6) is inserted into the compression spring.

10. The blank holding device according to claim 1, wherein, A soft buffer block (8) is further fixed to the end of the pressing head (3) away from the elastic member (4); And / or, a transfer rod (9) is fixedly connected to a side of the body (1) away from the indenter (3).

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