Composite clamp for machining box-shaped products

Abstract

The utility model discloses a composite clamp for processing a box-shaped product, which comprises a mounting mechanism, a pushing device is arranged at the upper part of the mounting mechanism, and a pushing device and a positioning block are arranged at the lower part of the mounting mechanism; an inner supporting mechanism is arranged in the mounting mechanism, the inner supporting mechanism comprises a plurality of inner supporting blocks, the inner supporting blocks are mounted on a fixed seat on the same plane through a sliding fit structure to form a structure capable of sliding inside and outside, a pressing hole is formed in the central part defined by the inner supporting blocks, and the pressing hole is of a conical structure; a pressing head is arranged in the pressing hole and connected with a downward pressing air cylinder. The periphery of the upper portion of a workpiece can be pushed towards the middle through an air cylinder, the lower portion of the workpiece is pushed, pressed and corrected through an air cylinder matched with a positioning block, and the inner supporting block is supported outwards till the standard size is just attached to a product. Therefore, the stability, the clamping speed, the operation convenience and the machining precision of a clamped product can be improved, cutter vibration cannot occur in the machining process, the cutter can be better protected, and cutter abrasion is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial production devices, and in particular to a clamp mainly used for clamping box-shaped products for processing, such as a lithium battery box of an electric motorcycle. Background Art

[0002] Box-shaped products (workpieces) are used in many fields, especially in the field of new energy, such as the external box of Sanyuanli batteries that are interchangeable for electric motorcycles. The order volume of such products is large, and the daily demand is more than a thousand pieces. Such products are generally aluminum alloy profiles, large in size, hollow, easy to deform, and have high dimensional accuracy requirements. Traditionally, one side of the product is fixed, and then the other sides are squeezed and pushed in turn. After completion, the other sides are replaced for fixing, and then the other sides are squeezed and pushed. After multiple cycles of fixing-squeezing and pushing, a product with a shape that meets the requirements is finally obtained. The disadvantages of this method are that, first, the efficiency is low, multiple clamping and multiple operations are required, and a lot of time is consumed; second, the accuracy is poor, and multiple clamping will bring more errors, which will affect the processing accuracy; third, the stability of the product clamping and fixing is not high enough, and the tool is prone to vibration during the processing process, which will increase the wear of the tool and increase the processing cost. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model provides a composite clamp for processing box-shaped products, which has a simple structure, is easy to operate, has high clamping and processing efficiency, has good stability, and can improve processing accuracy. The clamp is mainly used for processing workpieces such as lithium battery boxes.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a composite fixture for processing box-shaped products, including an installation mechanism, characterized in that: a pushing device is arranged at the upper part of the installation mechanism corresponding to each outer side surface of the workpiece to be processed, and a pushing device and a positioning block for the workpiece are arranged at the lower part of the installation mechanism; an internal support mechanism for each inner side surface of the workpiece is arranged in the installation mechanism, and the internal support mechanism includes a plurality of internal support blocks, each of which is installed on a fixed seat on the same plane through a sliding structure to form a structure that can slide inward and outward, and a pressing hole is formed in the central part surrounded by each internal support block, and the pressing hole is a conical structure; a pressing head is arranged in the pressing hole, and the pressing head is connected to a downward pressing cylinder, and the pressing head is driven by the downward pressing cylinder to push the internal support block to press the workpiece from the inside to the outside.

[0005] Furthermore, a plurality of slide grooves are arranged on the fixed seat, guide rail grooves are arranged in the slide grooves, and guide rails are installed in the guide rail grooves; a slider is installed on the bottom surface of the inner support block, and the slider is mounted on the guide rail to form a sliding structure of the inner support block.

[0006] Furthermore, the downward pressure cylinder is installed on the bottom surface of the fixing seat, and its cylinder rod passes through the fixing seat and is connected with the pressure head so as to realize the downward pressure of the pressure head.

[0007] Preferably, the pressure hole and the pressure head are mutually matching conical surface structures that are wider at the bottom and narrower at the top.

[0008] Furthermore, the mounting mechanism includes a base plate and an upper plate, the upper plate is mounted on the base plate through a support plate; the upper plate is a structure with a through hole formed in the middle, the fixed seat is mounted on the base plate through the fixed plate and is located in the middle through hole of the upper plate, and the positioning block is fixed on the base plate to resist the outer side of the workpiece.

[0009] Furthermore, the pushing device includes an upper push cylinder and a lower push cylinder. Several upper push cylinders are installed on the upper plate to align with the outer side surfaces of the workpiece, and the lower push cylinders are installed on the bottom plate opposite to the positioning block.

[0010] Preferably, the inner support blocks include four blocks, each of which is triangular in shape. The four inner support blocks are combined into a square structure, and each inner support block corresponds to an inner side surface of the workpiece; the upper push cylinders include four blocks, each of which is connected to a push block to push the four outer side surfaces of the workpiece respectively.

[0011] Preferably, the positioning blocks include two, both of which are right-angle structures. The two positioning blocks are respectively arranged on the outside of the two corners of the workpiece to resist the three sides of the lower part of the workpiece, and the push-down cylinder is connected to the push block to resist the other side of the workpiece.

[0012] Furthermore, avoidance grooves corresponding to the inner fixing columns of the workpiece are respectively arranged on the outer side surfaces of the inner supporting blocks. Of course, other matching structures may also be arranged.

[0013] The utility model uses cylinders to push the upper parts of the workpiece toward the middle, and uses a cylinder to push and correct the lower part with a positioning block, and uses a downward pressure mechanism to control the inner support block to push outward until the standard size just fits the product. In this way, the stability, clamping speed, operating convenience and processing accuracy of the clamped product can be improved. After the clamping stability is improved, the tool vibration will not occur during the processing, which can better protect the tool, reduce the wear of the tool, and reduce the processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the utility model when a workpiece is loaded;

[0015] Figure 2 This is a schematic diagram of the exploded structure of the utility model when a workpiece is loaded;

[0016] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 4This is a schematic diagram of the structure of the utility model after a part of the inner support blocks are removed.

[0018] In the figure, 11 is a bottom plate, 12 is an upper plate, 13 is a support plate, 14 is a fixed plate, 21 is an upper push cylinder, 22 is a lower push cylinder, 23 is a lower pressure cylinder, 24 is a push block, 3 is a fixed seat, 31 is a slide groove, 32 is a guide rail groove, 41 is a slider, 42 is a guide rail, 5 is an inner support block, 51 is a pressure hole, 52 is a avoidance groove, 6 is a pressure head, 7 is a positioning block, and 8 is a workpiece. DETAILED DESCRIPTION

[0019] In this embodiment, refer to Figure 1-Figure 4 The composite fixture for processing box-shaped products includes a mounting mechanism, a pushing device is arranged at the upper part of the mounting mechanism corresponding to each outer side surface of the workpiece 8 to be processed, and a pushing device and a positioning block 7 for the workpiece 8 are arranged at the lower part of the mounting mechanism; an inner supporting mechanism for each inner side surface of the workpiece 8 is arranged in the mounting mechanism, and the inner supporting mechanism includes a plurality of inner supporting blocks 5, each inner supporting block 5 is installed on a fixed seat 3 through a sliding structure in the same plane to form a structure that can slide inward and outward, and a pressing hole 51 is formed in the central part surrounded by each inner supporting block 5, and the pressing hole 51 is a conical structure; a pressing head 6 is arranged in the pressing hole 51, and the pressing head 6 is connected to a downward pressing cylinder 23, and the pressing head is driven by the downward pressing cylinder 23 to push the inner supporting block 5 to press the workpiece 8 from the inside to the outside.

[0020] A plurality of slide grooves 31 are arranged on the fixed seat 3, guide rail grooves 32 are arranged in the slide grooves 31, and guide rails 42 are installed in the guide rail grooves 32; a slider 41 is installed on the bottom surface of the inner support block 5, and the slider 41 is mounted on the guide rail 42 to form a sliding structure of the inner support block 5.

[0021] The downward pressing cylinder 23 is installed on the bottom surface of the fixing seat 3, and its cylinder rod passes through the fixing seat 3 and is connected with the pressing head 6 so as to realize the pressing head 6 to press downward.

[0022] The pressing hole 51 and the pressing head 6 are mutually matched conical surface structures that are wider at the bottom and narrower at the top. When the pressing head 6 is pressed downward, each inner support block 5 can be pushed outward synchronously to realize outward support of the workpiece 8.

[0023] The mounting mechanism includes a base plate 11 and an upper plate 12, and the upper plate 12 is mounted on the base plate 11 through a support plate 13; the upper plate 12 is a structure with a through hole formed in the middle to accommodate the workpiece 8; the fixed seat 3 is mounted on the base plate 11 through a fixed plate 14 and is located in the middle through hole of the upper plate 12, and is located inside the workpiece 8, the downward pressure cylinder 23 is located between the fixed plates 14, and the positioning block 7 is fixed on the base plate 11 to resist the outer side of the workpiece 8.

[0024] The pushing device includes an upper push cylinder 21 and a lower push cylinder 22. Each upper push cylinder 21 is installed on the upper plate 12 to align with the outer side surfaces of the workpiece 8, and the lower push cylinder 21 is installed on the bottom plate 12 opposite to the positioning block 7.

[0025] The inner support blocks 5 include four blocks, each of which is triangular in shape. The four inner support blocks 5 are combined into a square structure, and each inner support block 5 corresponds to an inner side surface of the workpiece 8; the upper push cylinders 21 include four blocks, and each upper push cylinder 21 is connected to a push block 24 to push the four outer side surfaces of the workpiece 8 respectively. The push block 24 fits with the outer side surface of the workpiece 8, which can achieve a better pushing effect and prevent the workpiece 8 from deformation.

[0026] The positioning blocks 7 include two, both of which are right-angle structures. The two positioning blocks 7 are respectively arranged on the outside of the two corners of the workpiece 8 to resist the three sides of the lower part of the workpiece 8, and the push-down cylinder 22 is connected to the push block 24 to resist the other side of the workpiece 8.

[0027] The outer side surface of each inner support block 5 is provided with a avoidance groove 52 corresponding to the inner fixing column of the workpiece 8. Of course, other matching structures can also be provided.

[0028] After the workpiece 8 is loaded, the downward pressure cylinder 23 is started, which drives the pressure head 6 to move downward. Through the shape matching of the pressure hole 51, each inner support block 5 moves outward along the guide rail, thereby pressing the inner side of the workpiece 8 outward, and the inner support reaches the standard size just to fit the workpiece. At the same time, the upward push cylinders 21 on the outside push toward the middle, and the downward push cylinder 22 at the bottom pushes toward the middle to correct the workpiece, that is, the clamping of the workpiece is completed, so as to carry out subsequent processing operations. After the processing is completed, each cylinder retreats, and the workpiece 8 can be taken out after the clamping is released.

[0029] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A composite fixture for processing box-shaped products, including a mounting mechanism, characterized in that: A pushing device is arranged at the upper part of the installation mechanism corresponding to each outer side surface of the workpiece to be processed, and a pushing device and a positioning block for the workpiece are arranged at the lower part of the installation mechanism; an internal support mechanism for each inner side surface of the workpiece is arranged in the installation mechanism, and the internal support mechanism includes a plurality of internal support blocks, and each internal support block is installed on a fixed seat through a sliding structure in the same plane to form a structure that can slide inward and outward, and a pressing hole is formed in the central part surrounded by each internal support block, and the pressing hole is a conical structure; a pressing head is arranged in the pressing hole, and the pressing head is connected to a downward pressing cylinder, and the pressing head is driven by the downward pressing cylinder to push the internal support block to press the workpiece from the inside to the outside.

2. The composite fixture for processing box-shaped products according to claim 1, characterized in that: A plurality of slide grooves are arranged on the fixed seat, guide rail grooves are arranged in the slide grooves, and guide rails are installed in the guide rail grooves; a sliding block is installed on the bottom surface of the inner support block, and the sliding block is mounted on the guide rail to form a sliding structure of the inner support block.

3. The composite fixture for processing box-shaped products according to claim 2, characterized in that: The downward pressure cylinder is installed on the bottom surface of the fixing seat, and the cylinder rod thereof passes through the fixing seat and is connected with the pressure head.

4. The composite fixture for processing box-shaped products according to claim 3 is characterized in that: The pressure hole and the pressure head are mutually matched conical surface structures with a wider bottom and a narrower top.

5. The composite fixture for processing box-shaped products according to claim 2, characterized in that: The mounting mechanism includes a base plate and an upper plate, wherein the upper plate is mounted on the base plate through a support plate; the upper plate is a structure with a through hole formed in the middle, the fixing seat is mounted on the base plate through the fixing plate and is located in the middle through hole of the upper plate, and the positioning block is fixed on the base plate to resist the outer side surface of the workpiece.

6. The composite fixture for processing box-shaped products according to claim 5, characterized in that: The pushing device comprises an upper pushing cylinder and a lower pushing cylinder. A plurality of upper pushing cylinders are mounted on the upper plate to align with the outer side surfaces of the workpiece, and the lower pushing cylinders are mounted on the bottom plate opposite to the positioning block.

7. The composite fixture for processing box-shaped products according to claim 6, characterized in that: The inner support blocks include four blocks, each of which is triangular in shape. The four inner support blocks are combined into a square structure, and each inner support block corresponds to an inner side surface of the workpiece; the upper push cylinders include four blocks, each of which is connected to a push block to push the four outer sides of the workpiece respectively.

8. The composite fixture for processing box-shaped products according to claim 6, characterized in that: The positioning blocks include two, both of which are right-angle structures. The two positioning blocks are respectively arranged on the outside of the two corners of the workpiece to abut against the three sides of the lower part of the workpiece, and the push-down cylinder is connected with a push block to abut against the other side of the workpiece.

9. The composite fixture for processing box-shaped products according to claim 7, characterized in that: The outer side surface of each inner support block is respectively provided with a avoidance groove corresponding to the inner side fixing column of the workpiece.

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