Square shell trimming device

Abstract

The utility model discloses a square shell trimming device which comprises a cam groove plate, a closed-loop groove is formed in the cam groove plate, a center shaft is arranged in the center of the cam groove plate, a swing rod is rotationally arranged at the position of the center shaft, a long hole is formed in the length direction of the swing rod, a sliding piece is arranged in the long hole in a sliding mode, and the sliding piece slides in the closed-loop groove while sliding along the long hole. The parallelogram frame is formed by connecting four driving connecting rods end to end, the parallelogram frame is provided with a follow-up end and a driving end which are opposite, the driving end is connected with the sliding piece, the follow-up end is provided with an inner cutting edge, and the driving end drives the follow-up end to move along a rectangular track; and the inner cutting edge and the outer cutting edge are matched to realize trimming. Outward thrust is provided for the to-be-trimmed part of the battery square shell in the moving process through the inner cutting edge, trimming is achieved in cooperation with contact of the outer cutting edge, a cut is turned outwards after trimming, and products in the square shell can be prevented from being scratched.

Description

TECHNICAL FIELD

[0001] The utility model relates to processing equipment technical field, concretely relates to a square shell trimming device. BACKGROUND

[0002] At present, the application of square shell is very extensive, including but not limited to packaging field and container field etc. Square shell is a kind of metal shell with one end opening, and common such as metal square can and battery square shell etc.

[0003] Taking battery square shell in new energy product packaging field as an example, battery square shell is usually composed of shell cover and shell body, since battery square shell is usually made of steel or aluminum material through die stamping, and the edge of battery square shell stamped out generally has excess, in order to guarantee appearance, avoid scratching battery and guarantee the consistency of shell body height of battery square shell, cutting is carried out in the height direction after shell body stretch forming, and the current square battery shell trimming is mainly rotary cutting on punch press, but the traditional trimming scheme finds the following deficiencies in actual use process:

[0004] (1) battery square shell obtained after punch press rotary cutting is inside turned in cutout, battery core is easily scratched, and it is not conducive to the safe and reliable assembly of battery core;

[0005] (2) the speed of punch press rotary cutting is usually low, so that the rotary cutting processing efficiency of shell body cannot be effectively improved;

[0006] (3) punch press is high in price, and equipment cost and maintenance cost are higher.

[0007] Therefore, how to solve the deficiencies of the prior art becomes the subject to be researched and solved by the utility model. SUMMARY

[0008] The utility model aims at providing a square shell trimming device.

[0009] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0010] A square shell trimming device, comprising cam groove plate, a closed loop groove is formed in the cam groove plate, and the geometric center of the closed loop groove corresponds to the geometric center of the cam groove plate;

[0011] Further comprising a swing rod, one end of the swing rod is rotationally arranged on the cam groove plate along a center axis, and the center axis is located at the geometric center of the cam groove plate;

[0012] A long hole is formed in the swing rod along the length direction thereof, a sliding part is slidably arranged along the long hole, and the sliding part slides in the closed loop groove while sliding along the long hole;

[0013] Further comprising four driving connecting rods, the four driving connecting rods are connected head to tail to form a parallelogram frame; two opposite hinge points of the four hinge points of the parallelogram frame are respectively a driven end and a driving end, the driving end is coaxially connected with the sliding piece, and an inner blade is coaxially arranged at the driven end, and the driven end moves along a rectangular trajectory under the driving of the driving end;

[0014] Further comprising two stabilizing connecting rods, the inner ends of the two stabilizing connecting rods are rotationally connected to the central shaft, the outer ends are symmetrically arranged on both sides of the swing rod with the swing rod as the axis, and the outer ends are respectively connected to the other two opposite hinge points of the parallelogram frame.

[0015] Further comprising an outer blade, an action surface of the outer blade is flush with an action surface of the inner blade in the horizontal direction, and during the trimming process, the inner blade and the outer blade have an overlapping area in the vertical projection on the cam groove plate, the overlapping area is a cutting area of the to-be-inspected square shell, and the shape of the cutting area corresponds to the shape of the mouth of the to-be-trimmed square shell.

[0016] Further, the closed loop groove has two first arc-shaped grooves symmetrically distributed with the X-axis as the symmetric axis, and two second arc-shaped grooves symmetrically distributed with the Y-axis as the symmetric axis; each first arc-shaped groove and each second arc-shaped groove are alternately connected.

[0017] Further, the rectangular trajectory has two first rectangular sides and two second rectangular sides, wherein the first rectangular sides extend along the X-axis, and the second rectangular sides extend along the Y-axis; when the sliding piece slides along the first arc-shaped groove, the inner blade moves along the first rectangular side; when the sliding piece slides along the second arc-shaped groove, the inner blade moves along the second rectangular side.

[0018] Further, the closed loop groove further has four inflection points, each inflection point is located at the connection of each first arc-shaped groove and each second arc-shaped groove; the distance between the central shaft and each inflection point is equal, and the distance between the sliding piece and the central shaft is smallest when the sliding piece is located at each inflection point.

[0019] Further, the long hole has a proximal end and a distal end, the distance between the proximal end and the central shaft is less than or equal to the shortest distance between the closed loop groove and the central shaft, and the distance between the distal end and the central shaft is greater than or equal to the longest distance between the closed loop groove and the central shaft.

[0020] Further, the outer blade is a rectangular structure, the geometric center of the rectangular structure is consistent with the geometric center of the closed loop groove, and the rectangular structure has a rectangular hollow area inside, and the rectangular hollow area is adapted to the shape of the to-be-trimmed square shell.

[0021] Further technical solutions, the sliding member is a cam follower.

[0022] The terms used herein are only for describing specific embodiments and are not intended to limit the present case. The singular form such as "a", "this", "this", "this" and "this" as used herein also includes the plural form.

[0023] As for the "first", "second" and the like used herein, it is not intended to specifically refer to the order or sequence, nor to limit the present case, which is only for distinguishing components or operations described in the same technical language.

[0024] As for the "contain", "include", "have" and the like used herein, they are all open terms, that is, they mean to include but not limited to.

[0025] As for the words (terms) used herein, except for special notes, they generally have the usual meaning of each word used in this field, in the content of the present case and in the special content. Some words used to describe the present case will be discussed below or elsewhere in the specification to provide additional guidance for those skilled in the art on the description of the present case.

[0026] As for the "front", "back", "up", "down", "left", "right" and the like used herein, they are all directional words, which are only used to illustrate the positional relationship between the structures in the present case, and are not used to limit the protection scheme and the specific direction of the actual implementation of the present case.

[0027] The working principle and advantages of the utility model are as follows:

[0028] 1、The technical scheme of the utility model drives the inner blade to move along a rectangular trajectory, provides an outward thrust to the part to be trimmed of the battery square shell during the movement process, and realizes trimming through the cooperation of the outer blade, and the cutout of the trimmed battery square shell can be turned outwards, which can avoid the situation that the battery core inside the battery square shell is scratched in the subsequent process due to the cutout turned inwards;

[0029] 2、In the edge trimming process, the vertical projections of the inner blade and the outer blade on the cam groove plate exist in an overlapping area, the overlapping area is used as a cutting area of the square shell to be repaired, and the shape of the cutting area corresponds to the shape of the mouth of the square shell to be trimmed, so that the cutting area can provide support and limiting action for the battery square shell during the edge trimming process of the battery square shell, so that the battery square shell is prevented from deforming or deviating due to stress during trimming;

[0030] 3、The utility model is easy to operate, and the edge trimming speed is faster than that of the prior art, so that the working efficiency can be effectively improved;

[0031] 4, The utility model discloses simple structure, therefore high reliability, low maintenance cost simultaneously, reduce the skill requirement of maintenance personnel. BRIEF DESCRIPTION OF DRAWINGS

[0032] BRIEF DESCRIPTION OF DRAWINGS Figure 1 It is the horizontal view of the utility model embodiment;

[0033] BRIEF DESCRIPTION OF DRAWINGS Figure 2 It is the horizontal view of the utility model embodiment;

[0034] BRIEF DESCRIPTION OF DRAWINGS Figure 3A It is the position relation diagram of inner blade and outer blade under the horizontal view of the utility model embodiment in initial state;

[0035] BRIEF DESCRIPTION OF DRAWINGS Figure 3B It is the position relation diagram of inner blade and outer blade under the horizontal view of the utility model embodiment when trimming;

[0036] BRIEF DESCRIPTION OF DRAWINGS Figure 4 It is the trimming process diagram of the utility model embodiment.

[0037] In the above drawings:

[0038] 1-cam groove plate;3-inner blade;4-outer blade;5-first rectangular edge;6-second rectangular edge;7-rectangular hollow region;8-cutting area;9-to be trimmed square shell;

[0039] 11-closed loop groove;12-center shaft;13-rocker;14-sliding element;

[0040] 111-first arc slot;112-second arc slot;113-inflection point;

[0041] 131-long hole;

[0042] 1311-proximal end;1312-distal end;

[0043] 21-driving link;22-stabilizing link;23-follower end;24-driving end. DETAILED DESCRIPTION

[0044] The utility model will be further described below in conjunction with the drawings and examples:

[0045] Examples: the following will be with the figure and detailed description to the case of clear explanation, any person skilled in the art after understanding the embodiment of the case, when can by the technology taught by the case, change and modification, it does not deviate from the spirit and scope of the case.

[0046] The utility model embodiment provides a square shell trimming device for cutting the shell body of square shell (such as battery square shell) around to make the shell body height consistent and meet the requirement, or cutting the burr of square shell mouth part, for simplifying the description, the structure and working principle of square shell trimming device are described in detail taking battery square shell as an example.

[0047] Referring to Figures 1-2 As shown in the figure, the square shell trimming device comprises a cam groove plate 1, a closed loop groove 11 is formed in the cam groove plate 1, the center of the cam groove plate 1 is also provided with a center shaft 12, the center shaft 12 is located at the geometric center of the closed loop groove 11, that is, the center shaft 12 is located at the center of the closed loop groove 11 and the cam groove plate 1.

[0048] It is worth noting that the cam groove plate 1 in the embodiment does not contain some mounting plates, bearing plates and the like on other devices, that is, in some embodiments, the closed loop groove 11 is located at the center of the cam groove plate 1, since the cam groove plate 1 is designed in one piece with a mounting plate (bearing plate), so that the closed loop groove 11 is not located at the center of the plate body designed in one piece, and such an embodiment is still within the protection scope of the embodiment.

[0049] The center shaft 12 is rotatably provided with a swing rod 13, the swing rod 13 has a length, a long hole 131 is formed along the length direction of the swing rod 13, a sliding piece 14 is slidably arranged along the long hole 131, and the sliding piece 14 slides along the long hole 131 and also slides in the closed loop groove 11. When the swing rod 13 is driven to rotate around the center shaft 12, the long hole 131 on the swing rod 13 has two limiting sides, according to the movement direction of the swing rod 13, one limiting side is in contact with the sliding piece 14 and pushes the sliding piece 14 to slide along the groove.

[0050] Optionally, the sliding piece 14 is a cam follower. Generally, the cam follower comprises an outer ring and a support as a shaft. In the embodiment, the cam follower serves as a guide piece, and its counterpart side is a curved surface, that is, the closed loop groove 11, which moves in a curve in the closed loop groove 11.

[0051] The embodiment further comprises four driving links 21, which are connected end to end to form a parallelogram frame, and the parallelogram frame has opposite driven ends 23 and driving ends 24, the driving ends 24 are connected to the sliding member 14, the inner blade 3 is arranged at the driven ends 23, and the driven ends 23 move along a rectangular trajectory under the driving of the driving ends 24; the embodiment further comprises two stabilizing links 22, one end of each stabilizing link 22 is connected to the central shaft 12, the other end is arranged on the two sides of the swing link 13 with the swing link 13 as the axis, and is connected to the other two ends of the parallelogram frame. It can be understood that the “other two ends of the parallelogram frame” refer to the other two ends of the parallelogram frame except the driven ends 23 and the driving ends 24.

[0052] Please continue to refer to Figure 2 The stabilizing link 22 has the following functions: each stabilizing link 22, swing link 13 and driving link 21 form a triangular structure, when the sliding member 14 is located at the nearest end 1311 or the farthest end 1312 of the long hole 131 and is in a relatively static state, the triangular structure is stable due to the relatively static central shaft 12 and sliding member 14, thereby stabilizing the parallelogram frame to limit the displacement of the inner blade 3 at the driven end 23, and the size of the rectangular trajectory of the inner blade 3 can be limited.

[0053] The embodiment further comprises an outer blade 4, which is a rectangular structure, and the geometric center of the rectangular structure is consistent with the geometric center of the closed-loop groove 11, and the rectangular structure has a rectangular hollow area 7 inside, which is matched with the shape of the square shell 9 to be trimmed.

[0054] It can be understood that the closed-loop groove 11 in the embodiment can ensure that the sliding member 14 slides in the closed-loop groove 11 to drive the inner blade 3 to move along a rectangular trajectory, and the integrity of the rectangular trajectory formed in this process is ensured, thereby ensuring that the complete periphery of the battery square shell is trimmed.

[0055] During the trimming process of the battery square shell, the battery square shell is placed in the rectangular hollow area 7 and tightly abuts against the side surface of the outer blade 4, on the one hand, the outer blade 4 can provide support and limiting action for the battery square shell to prevent the battery square shell from deforming or deviating in position due to stress during the trimming process, and on the other hand, the inner blade 3 cooperates with the outer blade 4 to trim the battery square shell during the movement of the inner blade 3.

[0056] Further, in order to realize the trimming function of the inner blade 3 and the outer blade 4, the acting surface of the inner blade 3 is flush with the acting surface of the outer blade 4, and during the movement of the inner blade 3, the projections of the inner blade 3 and the outer blade 4 on the cam groove plate 1 always have an overlapping area, which is the cutting area 8 of the square shell 9 to be trimmed.

[0057] Specifically, please see Figures 3A-3B Before the cutting of the to-be-cut square shell 9, the to-be-cut square shell 9 needs to be placed inside the rectangular hollow area 7 and abut against the inner side of the outer blade 4, at this time, the inner blade 3 and the outer blade 4 are in a non-contact state; then, the inner blade 3 translates along the horizontal direction and pushes the part of the to-be-cut square shell 9 that needs to be cut to the outer blade 4, the inner blade 3 and the outer blade 4 contact and cooperate to realize the shearing action, and the cut of the cut square shell after cutting is turned outwards, so as to avoid the situation that the battery core inside the battery square shell is scratched in the subsequent process due to the cut turned inwards, at this time, the vertical projections of the inner blade 3 and the outer blade 4 on the cam groove plate 1 have an overlapping area, which is the cutting area 8.

[0058] As Figure 4 shown, then the inner blade 3 moves along a rectangular trajectory to realize complete cutting of the mouth of the to-be-cut square shell 9.

[0059] Specifically, since the position of the outer blade 4 is fixed, in order to enable the inner blade 3 to be in a non-contact state with the outer blade 4 before cutting and a contact state with the outer blade 4 during cutting, the embodiment further includes a driving mechanism of the inner blade 3, which is usually a motor, which can directly drive the inner blade 3 through the motor or indirectly drive the inner blade 3 through a transmission structure such as a speed reducer.

[0060] Please continue to see Figure 2 In the embodiment, the closed-loop groove 11 has two first arc-shaped grooves 111 symmetrically distributed with the X-axis as the symmetry axis, and two second arc-shaped grooves 112 symmetrically distributed with the Y-axis as the symmetry axis; each first arc-shaped groove 111 and each second arc-shaped groove 112 are adjacent to each other and connected to each other.

[0061] When the sliding member 14 slides along the first arc-shaped groove 111, the inner blade 3 is driven to move along the first rectangular side 5 of the rectangular trajectory; when the sliding member 14 slides along the second arc-shaped groove 112, the inner blade 3 is driven to slide along the second rectangular side 6 of the rectangular trajectory.

[0062] Further, the closed-loop groove 11 further has four inflection points 113, each inflection point 113 is located at the connection between the first arc-shaped groove 111 and the second arc-shaped groove 112; the distance between the center axis 12 and each inflection point 113 is equal, and the distance between the center axis 12 and the sliding member 14 is the smallest when the sliding member 14 is located at each inflection point 113. That is, the inner blade 3 changes direction every time the sliding member 14 passes an inflection point 113, that is, moves from the first arc-shaped groove 111 to the second arc-shaped groove 112, or moves from the second arc-shaped groove 112 to the first arc-shaped groove 111.

[0063] In order to ensure the normal movement of the sliding piece 14, the long hole 131 needs to have sufficient length.

[0064] In the embodiment, the long hole 131 has a proximal end 1311 and a distal end 1312, the proximal end 1311 is the end of the long hole 131 closest to the central shaft 12, the distance between the proximal end 1311 and the central shaft is less than or equal to the shortest distance between the closed loop groove 11 and the central shaft 12, and the distance between the distal end 1312 and the central shaft 12 is greater than or equal to the longest distance between the closed loop groove 11 and the central shaft 12.

[0065] The working process of the present embodiment is as follows:

[0066] Place the to-be-trimmed square shell 9 inside the rectangular hollow area 7 formed by the outer blade 4 and abut against the side of the outer blade 4, at this time, the to-be-trimmed part of the square shell protrudes from the rectangular hollow area 7;

[0067] The swing rod 13 has a long hole 131 extending along the length direction of the swing rod 13, and a sliding piece 14 is slidably arranged in the long hole 131, the sliding piece 14 slides in the long hole 131 and is driven by the swing rod 13 to move along a closed loop groove 11, the closed loop groove 11 can ensure that the sliding piece 14 slides in the closed loop groove 11 and drives the inner blade 3 to move along a rectangular trajectory, and the integrity of the rectangular trajectory formed in this process ensures that the complete periphery of the battery square shell is trimmed;

[0068] The parallelogram frame has opposite driven end 23 and driving end 24, the driving end 24 is connected with the sliding piece 14, the swing rod 13 drives the sliding piece 14 to move along the closed loop groove 11, and the sliding piece 14 drives the driven end 23 to move along the rectangular trajectory through the parallelogram frame formed by the driving link 21;

[0069] Each stabilizing link 22, swing rod 13 and a driving link 21 form a triangular structure, when the sliding piece 14 is located at the proximal end 1311 or the distal end 1312 of the long hole 131 and is in a relatively static state, the triangular structure has a relatively static central shaft 12 and sliding piece 14, so that the triangular structure is in a stable state, thereby stabilizing the parallelogram frame to limit the displacement of the inner blade 3 at the driven end 23, and the size of the rectangular trajectory of the inner blade 3 can be limited;

[0070] The driven end 23 is provided with the inner blade 3, and the inner blade 3 moves along the above-mentioned rectangular trajectory under the driving of the driving end 24, and the to-be-trimmed part of the square shell is trimmed through the cooperation of the inner blade 3 and the outer blade 4.

[0071] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A square case trimming apparatus characterized by: The cam groove plate (1) is provided with a closed loop groove (11), and the geometric center of the closed loop groove (11) corresponds to the geometric center of the cam groove plate (1); The swing rod (13) is rotatably arranged on the cam groove plate (1) at one end along a center axis (12), and the center axis (12) is located at the geometric center of the cam groove plate (1); A long hole (131) is formed in the swing rod (13) along the length direction, and a sliding piece (14) is slidably arranged along the long hole (131), and the sliding piece (14) slides in the closed loop groove (11) while sliding along the long hole (131); The four driving connecting rods (21) are connected at the head and tail to form a parallelogram frame, two opposite hinge points of the four hinge points of the parallelogram frame are respectively a driven end (23) and a driving end (24), the driving end (24) is coaxially connected with the sliding piece (14), an inner blade (3) is coaxially arranged at the driven end (23), and the driven end (23) moves along a rectangular trajectory under the driving of the driving end (24); The two stable connecting rods (22) are rotatably connected at the inner ends to the center axis (12), and the outer ends are symmetrically arranged on both sides of the swing rod (13) with the swing rod (13) as the axis, and are respectively connected with the other two opposite hinge points of the parallelogram frame; The outer blade (4) has a working surface which is flush with the working surface of the inner blade (3) in the horizontal direction, and during the trimming process, the vertical projections of the inner blade (3) and the outer blade (4) on the cam groove plate (1) have an overlapping area, and the overlapping area is a cutting area (8) of the to-be-inspected square shell (9).

2. The square case trimming device according to claim 1, characterized in that: The closed loop groove (11) has two first arc-shaped grooves (111) which are symmetrically distributed with the X-axis as the symmetric axis, and two second arc-shaped grooves (112) which are symmetrically distributed with the Y-axis as the symmetric axis; each first arc-shaped groove (111) and each second arc-shaped groove (112) are alternately connected.

3. The square case trimming device of claim 2, wherein: The rectangular trajectory has two first rectangular edges (5) and two second rectangular edges (6), wherein the first rectangular edges (5) extend along the X-axis, and the second rectangular edges (6) extend along the Y-axis; When the sliding piece (14) slides along the first arc-shaped groove (111), the inner blade (3) moves along the first rectangular edge (5); When the sliding piece (14) slides along the second arc-shaped groove (112), the inner blade (3) moves along the second rectangular edge (6).

4. The square case trimming device of claim 2, wherein: The closed loop groove (11) further has four inflection points (113), and each inflection point (113) is located at the connection of each first arc-shaped groove (111) and each second arc-shaped groove (112); The distance between the center axis (12) and each inflection point (113) is equal, and the distance between the sliding piece (14) and the center axis (12) is the smallest when the sliding piece (14) is located at each inflection point (113).

5. The square case trimming device of claim 1, wherein: The long hole (131) has a proximal end (1311) and a distal end (1312), the distance between the proximal end (1311) and the central axis (12) is less than or equal to the shortest distance between the closed-loop groove (11) and the central axis (12), and the distance between the distal end (1312) and the central axis (12) is greater than or equal to the longest distance between the closed-loop groove (11) and the central axis (12).

6. The square case trimming device of claim 1, wherein: The outer blade (4) is a rectangular structure, the geometric center of the rectangular structure is consistent with the position of the geometric center of the closed-loop groove (11), and the rectangular structure has a rectangular hollow area (7) inside, and the rectangular hollow area (7) is matched with the shape of the square shell (9) to be trimmed.

7. The square case trimming device of claim 1, wherein: The sliding piece (14) is a cam follower.

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