A package fixture
By introducing a combination of a guide groove, a bending surface, and a pressure-holding structure into the wrapping fixture, the problem of the membrane material easily detaching from the workpiece surface is solved, achieving tight adhesion of the membrane material and improving the working efficiency of the wrapping fixture.
Patent Information
- Application Number
- CN202423178429.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-20
AI Technical Summary
In existing wrapping fixtures, once the workpiece leaves the channel, the guiding surface is lost, and the wrapping material gradually moves away from the workpiece surface. This loss of the guiding surface causes the wrapping material to gradually move away from the workpiece, which is a technical problem in the prior art.
A wrapping fixture comprising a fixture body, a first bending component, a second bending component, a first pressure-holding structure, and a second pressure-holding structure is adopted. Through the combination of the guide groove, the bending surface, and the pressure-holding structure, the film material is tightly bonded to the workpiece surface and pressure is maintained.
It improves the adhesion of the membrane to the workpiece surface, reduces the probability of the membrane automatically moving away from the workpiece surface, and enhances the working effect of the wrapping fixture.
Smart Images
Figure CN223605841U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to material forming jig technical field, especially a kind of wrapping jig. BACKGROUND
[0002] In the manufacturing process of graphite material workpiece, sometimes need to use film material to wrap workpiece, so as to realize the protection of workpiece.
[0003] In the related art, in order to facilitate the film material to wrap the workpiece, wrapping jig is used, the wrapping jig is provided with a passage allowing the workpiece to pass through, and the passage wall of the passage is provided with a continuous guide surface. During the workpiece passes through the passage, the guide surface guides the film material to gradually wrap the workpiece.
[0004] Although the guide surface can guide the film material to gradually wrap the workpiece, when the workpiece is separated from the passage, the film material wrapping the workpiece gradually moves away from the surface of the workpiece, so that the working effect of the existing wrapping jig is poor. UTILITY MODEL CONTENTS
[0005] The utility model discloses a wrapping jig with better working effect.
[0006] According to the wrapping jig provided by the utility model embodiment, the first bending part is arranged on one side of the width direction of the material guide groove, and the first bending surface is formed on the first bending part. Along the preset direction, the cross-sectional shape of the first bending surface gradually and smoothly transitions from a horizontal line to a vertical line close to the middle part of the material guide groove. The first bending surface is used to guide the film material attached to the lower end surface of the workpiece to bend upward to the first side end surface of the workpiece. Along the preset direction, the second bending part is arranged on the rear side of the first bending part, and the second bending surface is formed on the second bending part. Along the preset direction, the cross-sectional shape of the second bending surface gradually and smoothly transitions from a vertical line to a horizontal line extending to the upper side of the material guide groove. The second bending surface is used to guide the film material attached to the first side end surface of the workpiece to bend horizontally to the upper end surface of the workpiece. The first pressure maintaining structure is arranged between the first bending part and the second bending part, and is used to maintain the pressure of the film material attached to the first side end surface of the workpiece. Along the preset direction, the second pressure maintaining structure is arranged on the rear side of the second bending part, and is used to maintain the pressure of the film material attached to the upper end surface of the workpiece.
[0007] The wrapping jig has at least the following beneficial effects: in the wrapping jig, the film material adhered to the lower end of the workpiece can be bent upwards to adhere to the first side end surface of the workpiece under the guidance of the first bending surface of the first bending piece, then the film material can be pressurized by the first pressure maintaining structure, so that the film material can tightly adhere to the first side end surface, then the film material can be bent to the upper end surface of the workpiece under the guidance of the second bending surface of the second bending piece, and then the second pressure maintaining structure can pressurize the film material, so that the film material can tightly adhere to the upper side surface of the workpiece. In the application, the film material is pressurized by the pressure maintaining structure after adhering to each surface of the workpiece, so that the adhesion of the film material to the surface of the workpiece is tighter, and the wrapping jig has better working effect.
[0008] The wrapping jig has at least the following beneficial effects: in the wrapping jig, the film material adhered to the lower end of the workpiece can be bent upwards to adhere to the first side end surface of the workpiece under the guidance of the first bending surface of the first bending piece, then the film material can be pressurized by the first pressure maintaining structure, so that the film material can tightly adhere to the first side end surface, then the film material can be bent to the upper end surface of the workpiece under the guidance of the second bending surface of the second bending piece, and then the second pressure maintaining structure can pressurize the film material, so that the film material can tightly adhere to the upper side surface of the workpiece. In the application, the film material is pressurized by the pressure maintaining structure after adhering to each surface of the workpiece, so that the adhesion of the film material to the surface of the workpiece is tighter, and the wrapping jig has better working effect.
[0009] The wrapping jig has at least the following beneficial effects: in the wrapping jig, the film material adhered to the lower end of the workpiece can be bent upwards to adhere to the first side end surface of the workpiece under the guidance of the first bending surface of the first bending piece, then the film material can be pressurized by the first pressure maintaining structure, so that the film material can tightly adhere to the first side end surface, then the film material can be bent to the upper end surface of the workpiece under the guidance of the second bending surface of the second bending piece, and then the second pressure maintaining structure can pressurize the film material, so that the film material can tightly adhere to the upper side surface of the workpiece. In the application, the film material is pressurized by the pressure maintaining structure after adhering to each surface of the workpiece, so that the adhesion of the film material to the surface of the workpiece is tighter, and the wrapping jig has better working effect.
[0010] The wrapping jig has at least the following beneficial effects: in the wrapping jig, the film material adhered to the lower end of the workpiece can be bent upwards to adhere to the first side end surface of the workpiece under the guidance of the first bending surface of the first bending piece, then the film material can be pressurized by the first pressure maintaining structure, so that the film material can tightly adhere to the first side end surface, then the film material can be bent to the upper end surface of the workpiece under the guidance of the second bending surface of the second bending piece, and then the second pressure maintaining structure can pressurize the film material, so that the film material can tightly adhere to the upper side surface of the workpiece. In the application, the film material is pressurized by the pressure maintaining structure after adhering to each surface of the workpiece, so that the adhesion of the film material to the surface of the workpiece is tighter, and the wrapping jig has better working effect.
[0011] The wrapping jig has at least the following beneficial effects: in the wrapping jig, the film material adhered to the lower end of the workpiece can be bent upwards to adhere to the first side end surface of the workpiece under the guidance of the first bending surface of the first bending piece, then the film material can be pressurized by the first pressure maintaining structure, so that the film material can tightly adhere to the first side end surface, then the film material can be bent to the upper end surface of the workpiece under the guidance of the second bending surface of the second bending piece, and then the second pressure maintaining structure can pressurize the film material, so that the film material can tightly adhere to the upper side surface of the workpiece. In the application, the film material is pressurized by the pressure maintaining structure after adhering to each surface of the workpiece, so that the adhesion of the film material to the surface of the workpiece is tighter, and the wrapping jig has better working effect.
[0012] The wrapping jig has at least the following beneficial effects: in the wrapping jig, the film material adhered to the lower end of the workpiece can be bent upwards to adhere to the first side end surface of the workpiece under the guidance of the first bending surface of the first bending piece, then the film material can be pressurized by the first pressure maintaining structure, so that the film material can tightly adhere to the first side end surface, then the film material can be bent to the upper end surface of the workpiece under the guidance of the second bending surface of the second bending piece, and then the second pressure maintaining structure can pressurize the film material, so that the film material can tightly adhere to the upper side surface of the workpiece. In the application, the film material is pressurized by the pressure maintaining structure after adhering to each surface of the workpiece, so that the adhesion of the film material to the surface of the workpiece is tighter, and the wrapping jig has better working effect.
[0013] The wrapping jig has at least the following beneficial effects: in the wrapping jig, the film material adhered to the lower end of the workpiece can be bent upwards to adhere to the first side end surface of the workpiece under the guidance of the first bending surface of the first bending piece, then the film material can be pressurized by the first pressure maintaining structure, so that the film material can tightly adhere to the first side end surface, then the film material can be bent to the upper end surface of the workpiece under the guidance of the second bending surface of the second bending piece, and then the second pressure maintaining structure can pressurize the film material, so that the film material can tightly adhere to the upper side surface of the workpiece. In the application, the film material is pressurized by the pressure maintaining structure after adhering to each surface of the workpiece, so that the adhesion of the film material to the surface of the workpiece is tighter, and the wrapping jig has better working effect.
[0014] The wrapping jig has at least the following beneficial effects: in the wrapping jig, the film material adhered to the lower end of the workpiece can be bent upwards to adhere to the first side end surface of the workpiece under the guidance of the first bending surface of the first bending piece, then the film material can be pressurized by the first pressure maintaining structure, so that the film material can tightly adhere to the first side end surface, then the film material can be bent to the upper end surface of the workpiece under the guidance of the second bending surface of the second bending piece, and then the second pressure maintaining structure can pressurize the film material, so that the film material can tightly adhere to the upper side surface of the workpiece. In the application, the film material is pressurized by the pressure maintaining structure after adhering to each surface of the workpiece, so that the adhesion of the film material to the surface of the workpiece is tighter, and the wrapping jig has better working effect.
[0015] According to the wrapping jig, the first bending piece, the second bending piece, the first pressure maintaining structure and the second pressure maintaining structure jointly constitute a bending subunit, and the material guide groove is provided with one bending subunit on each side in the width direction of the material guide groove.
[0016] According to the wrapping jig, the first bending piece, the second bending piece, the first pressure maintaining structure and the second pressure maintaining structure jointly constitute a bending subunit, and the material guide groove is provided with one bending subunit on each side in the width direction of the material guide groove.
[0017] Additional aspects and advantages of the present application will be described in part in the description that follows, and in part will become apparent to those skilled in the art upon examination of the following description and drawings. BRIEF DESCRIPTION OF DRAWINGS
[0018] The present application will be further described below in conjunction with the drawings and embodiments.
[0019] Figure 1 The structure of the wrapping jig of an embodiment of the present application is shown in the figure.
[0020] Figure 2 The structure of the wrapping jig of an embodiment of the present application is shown in the figure. Figure 1 The local enlarged view of the structure at A of the wrapping jig is shown in the figure.
[0021] Figure 3 The structure of the wrapping jig of an embodiment of the present application is shown in the figure. Figure 1 The structure of the second bending piece and the second pressure maintaining structure of the wrapping jig is shown in the figure.
[0022] Figure 4 The state change diagram of the gradual wrapping of the workpiece by the film material is shown in the figure.
[0023] Reference signs:
[0024] Workpiece 10; film material 20;
[0025] Jig body 100; material guide groove 110;
[0026] First bending piece 200; first bending surface 210;
[0027] Second bending piece 300; second bending surface 310;
[0028] First pressure maintaining structure 400; first pressure maintaining surface 410;
[0029] Second pressure maintaining structure 500; second pressure maintaining surface 510;
[0030] Limiting piece 600; connecting portion 610; limiting portion 620. DETAILED DESCRIPTION
[0031] The detailed description of the embodiments of the present application will be given below, and the preferred embodiments of the present application are shown in the drawings, which are used to supplement the description of the text part of the specification and make people understand each technical feature and the overall technical scheme of the present application intuitively and visually, but it cannot be understood as a limitation on the protection scope of the present application.
[0032] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0033] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of indicated technical features.
[0034] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing and connecting should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application according to the specific content of the technical scheme.
[0035] The detailed description of the present application will be given below. Figures 1 to 4 The package jig of the present application will be described in detail.
[0036] Referring to Figure 1 , according to the package jig of the present application, the package jig comprises a jig body 100, a first bending piece 200, a second bending piece 300, a first pressure maintaining structure 400 and a second pressure maintaining structure 500.
[0037] The jig body 100 is provided with a material guide groove 110 extending in a preset direction, the material guide groove 110 allowing the workpiece 10 to pass through; the first bending piece 200 is arranged on one side in the width direction of the material guide groove 110, and the first bending surface 210 is formed on the first bending piece 200; in the preset direction, the cross-sectional shape of the first bending surface 210 gradually and smoothly transitions from a horizontal line to a vertical line close to the middle of the material guide groove 110, and the first bending surface 210 is used for guiding the film material 20 adhering to the lower end surface of the workpiece 10 to bend upwards to adhere to the first side end surface of the workpiece 10; in the preset direction, the second bending piece 300 is arranged on the rear side of the first bending piece 200, and the second bending surface 310 is formed on the second bending piece 300; in the preset direction, the cross-sectional shape of the second bending surface 310 gradually and smoothly transitions from a vertical line to a horizontal line extending to the upper side of the material guide groove 110, and the second bending surface 310 is used for guiding the film material 20 adhering to the first side end surface of the workpiece 10 to bend horizontally to adhere to the upper end surface of the workpiece 10; the first pressure maintaining structure 400 is arranged between the first bending piece 200 and the second bending piece 300 and is used for maintaining the pressure of the film material 20 adhering to the first side end surface of the workpiece 10; in the preset direction, the second pressure maintaining structure 500 is arranged on the rear side of the second bending piece 300 and is used for maintaining the pressure of the film material 20 adhering to the upper end surface of the workpiece 10.
[0038] For example, as shown in Figures 1 to 3 the first side end surface of the workpiece 10 is the left end surface of the workpiece 10, the jig body 100 is provided with a material guide groove 110 extending front to back, the workpiece 10 can be conveyed from front to back along the material guide groove 110, the first bending piece 200, the first pressure maintaining structure 400, the second bending piece 300 and the second pressure maintaining structure 500 are all arranged on the left side of the material guide groove 110 and arranged in order from front to back, the first bending surface 210 is arranged on the first bending piece 200, and the second bending surface 310 is arranged on the second bending piece 300; from front to back, the cross-sectional shape of the first bending surface 210 gradually and smoothly transitions from a horizontal line to a vertical line close to the middle of the material guide groove 110, and the cross-sectional shape of the second bending surface 310 gradually and smoothly transitions from a vertical line to a horizontal line extending to the upper side of the material guide groove 110.
[0039] In the working process of the wrapping jig of the utility model, referring to Figure 4The lower end surface of the workpiece 10 is attached with the film material 20, when the workpiece 10 moves along the material guide groove 110 to the first bending part 200, under the abutment of the first bending surface 210, the left end of the film material 20 is gradually bent upwards to attach the left end surface of the workpiece 10; when the workpiece 10 moves along the material guide groove 110 to the first pressure maintaining structure 400, the first pressure maintaining structure 400 can maintain the pressure of the film material 20, so that the film material 20 can tightly attach the left end surface of the workpiece 10; when the workpiece 10 moves along the material guide groove 110 to the second bending part 300, under the abutment of the second bending surface 310, the left end of the film material 20 is gradually bent downwards to the right to attach the upper end surface of the workpiece 10; when the workpiece 10 moves along the material guide groove 110 to the second pressure maintaining structure 500, the second pressure maintaining structure 500 can maintain the pressure of the film material 20, so that the film material 20 can tightly attach the upper end surface of the workpiece 10.
[0040] It can be understood that, in the wrapping jig of the utility model, after the first bending surface 210 of the first bending part 200 pushes the film material 20 to attach the first side end surface of the workpiece 10, the first pressure maintaining structure 400 can immediately maintain the pressure of the film material 20 on the first side end surface of the workpiece 10, so that the film material 20 can tightly attach the first side end surface of the workpiece 10; after the second bending surface 310 of the second bending part 300 pushes the film material 20 to attach the upper end surface of the workpiece 10, the second pressure maintaining structure 500 can immediately maintain the pressure of the film material 20 on the upper end surface of the workpiece 10, so that the film material 20 can tightly attach the upper end surface of the workpiece 10. The arrangement of the first pressure maintaining structure 400 and the second pressure maintaining structure 500 makes the attachment of the film material 20 on the surface of the workpiece 10 more closely, thereby reducing the probability that the film material 20 automatically moves away from the surface of the workpiece 10, and further improving the working effect of the wrapping jig.
[0041] In some embodiments of the utility model, referring to Figure 2 The first pressure maintaining structure 400 is formed with a first pressure maintaining surface 410, the first pressure maintaining surface 410 extends along the vertical direction and is used for extruding the first side end surface of the workpiece 10 in the material guide groove 110.
[0042] It can be understood that, since the first pressure maintaining surface 410 extends along the vertical direction, when the workpiece 10 moves to the right side of the first pressure maintaining surface 410, the first pressure maintaining surface 410 can abut and push the film material 20 to tightly attach the left side end surface of the workpiece 10.
[0043] In further embodiments of the utility model, referring to Figure 2 The first pressure maintaining structure 400 and the first bending part 200 are integrally arranged in the same material, and the first pressure maintaining surface 410 is smoothly connected with the first bending surface 210.
[0044] It can be understood that, by integrally arranging the first pressure maintaining structure 400 with the first bending piece 200, the first pressure maintaining structure 400 and the first bending piece 200 can be integrally formed synchronously, thereby reducing the manufacturing difficulty of the first pressure maintaining structure 400 and the first bending piece 200.
[0045] It can be understood that, since the first pressure maintaining surface 410 is smoothly connected with the first bending surface 210, after the first bending surface 210 bends the film material 20 to the first side end surface of the workpiece 10, the first pressure maintaining surface 410 can immediately maintain the pressure of the film material 20 on the first side end surface, so that the film material 20 can be tightly attached to the first side end surface of the workpiece 10, thereby improving the pressure maintaining effect of the first pressure maintaining structure 400 on the film material 20 on the workpiece 10.
[0046] In some embodiments of the present application, referring to Figure 1 The wrapping jig further comprises a limiting piece 600, which is arranged on the upper side of the material guide groove 110 and is used for limiting the workpiece 10 in the material guide groove 110 in the vertical direction.
[0047] It can be understood that, by arranging the limiting piece 600, the limiting piece 600 can limit the workpiece 10 in the material guide groove 110 in the vertical direction, so as to prevent the workpiece 10 in the material guide groove 110 from separating upwardly from the material guide groove 110.
[0048] In further embodiments of the present application, referring to Figure 2 The limiting piece 600 comprises a connecting part 610 and a limiting part 620, the connecting part 610 is connected with the first pressure maintaining structure 400, the limiting part 620 is located directly above the material guide groove 110, the limiting part 620 and the groove wall of the material guide groove 110 jointly define a material passing channel allowing the workpiece 10 to pass through, and a material passing gap allowing the film material 20 to pass through is formed between the limiting part 620 and the first pressure maintaining surface 410.
[0049] It can be understood that, since the left end of the film material 20 not only needs to be attached to the left end surface of the workpiece 10, but also needs to be attached to the upper end surface of the workpiece 10 subsequently, after the film material 20 is attached to the left end surface of the workpiece 10, part of the structure of the film material 20 is still located on the upper side of the film material 20, so as to be attached to the upper end surface of the workpiece 10 subsequently, since the material passing gap allowing the film material 20 to pass through is formed between the limiting part 620 and the first pressure maintaining surface 410, the part of the film material 20 located on the upper side of the workpiece 10 can pass through the material passing gap to move smoothly along with the workpiece 10 on the premise that the workpiece 10 can pass through the material passing channel smoothly.
[0050] In some embodiments of the present application, referring to Figure 3The second pressure maintaining structure 500 is provided with a second pressure maintaining surface 510, which is located on the upper side of the material guide groove 110 and extends horizontally and is used to press the upper end surface of the workpiece 10 in the material guide groove 110.
[0051] It can be understood that, since the second pressure maintaining surface 510 is located on the upper side of the material guide groove 110 and extends horizontally, when the workpiece 10 moves along the material guide groove 110 to be directly below the second pressure maintaining surface 510, the second pressure maintaining surface 510 can press the upper end surface of the workpiece 10 downward, so that the film material 20 can tightly adhere to the upper end surface of the workpiece 10.
[0052] In some embodiments of the present application, the second pressure maintaining structure 500 and the second bending piece 300 are integrally arranged, and the second pressure maintaining surface 510 is smoothly connected with the second bending surface 310.
[0053] It can be understood that, since the second pressure maintaining structure 500 and the second bending piece 300 are integrally arranged, the second pressure maintaining structure 500 and the second bending piece 300 can be integrally manufactured, and the manufacturing of the second pressure maintaining structure 500 and the second bending piece 300 is more convenient.
[0054] It can be understood that, since the second pressure maintaining surface 510 and the second bending surface 310 are smoothly connected, after the second bending surface 310 bends and adheres the film material 20 to the upper end surface of the workpiece 10, the second pressure maintaining surface 510 can immediately maintain the pressure of the film material 20 adhered to the upper end surface of the workpiece 10, so that the film material 20 can be tightly adhered to the upper end surface of the workpiece 10.
[0055] In order to facilitate the installation or disassembly of the second bending piece 300, in some embodiments of the present application, the second bending piece 300 is detachably arranged on the jig body 100 through a threaded connecting piece.
[0056] Further, the staff can realize the disassembly or installation of the second bending piece 300 on the jig body 100 by dismounting or installing the threaded connecting piece.
[0057] It should be noted that, in some cases, the left and right sides of the workpiece 10 need to be wrapped with the film material 20.
[0058] Based on the above situation, in some embodiments of the present application, referring to Figure 1 The first bending piece 200, the second bending piece 300, the first pressure maintaining structure 400 and the second pressure maintaining structure 500 jointly constitute a bending subunit, and the material guide groove 110 is respectively provided with one bending subunit on both sides in the width direction thereof.
[0059] It can be understood that by arranging one bending sub-unit on each side of the material guide groove 110 in the width direction of the material guide groove 110, the left and right ends of the film material 20 can be attached to the left and right end faces of the workpiece 10 under the action of the two bending sub-units during the movement of the workpiece 10 along the material guide groove 110, and the film material 20 can be attached to the upper end face of the workpiece 10, thereby completing the wrapping of the workpiece 10.
[0060] In further embodiments of the present application, referring to Figure 1 The jig body 100 is provided with a plurality of material guide grooves 110 in parallel, each material guide groove 110 is adapted to a type of workpiece 10, and each material guide groove 110 corresponds to two bending sub-units.
[0061] It can be understood that since the jig body 100 is provided with a plurality of material guide grooves 110 in parallel, each material guide groove 110 is adapted to a type of workpiece 10, so that the wrapping jig of the present application can complete the wrapping of the film material 20 on the workpiece 10 of multiple specifications.
[0062] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A packaging jig, characterized by, The utility model relates to a kind of film bending jig, including: Jig body is provided with the material guide groove extending along preset direction, the material guide groove allows workpiece to pass through; First bending piece, it is located in the width direction of the material guide groove one side, first bending surface is formed on the first bending piece, along the preset direction, the cross-sectional shape of the first bending surface is gradually smoothly transitioned from horizontal line to vertical line close to the middle part of the material guide groove, the first bending surface is used to guide the film material that is attached to the lower end surface of workpiece to bend upwards to the first side end surface of workpiece that is attached; Second bending piece, along the preset direction, the second bending piece is located in the rear side of the first bending piece, second bending surface is formed on the second bending piece, along the preset direction, the cross-sectional shape of the second bending surface is gradually smoothly transitioned from vertical line to horizontal line extending to the upper side of the material guide groove, the second bending surface is used to guide the film material that is attached to the first side end surface of workpiece to bend horizontally to the upper end surface of workpiece that is attached; First pressure maintaining structure, it is located between the first bending piece and the second bending piece, and is used to maintain pressure to the film material that is attached to the first side end surface of workpiece; Second pressure maintaining structure, along the preset direction, the second pressure maintaining structure is located in the rear side of the second bending piece, and is used to maintain pressure to the film material that is attached to the upper end surface of workpiece.
2. The packaging fixture of claim 1, wherein, First pressure maintaining surface is formed on the first pressure maintaining structure, the first pressure maintaining surface extends along vertical direction, and is used to extrude the first side end surface of workpiece in the material guide groove.
3. The packaging fixture of claim 2, wherein, The first pressure maintaining structure and the first bending piece are integrally provided, and the first pressure maintaining surface is smoothly connected with the first bending surface.
4. The packaging fixture of claim 2, wherein, Further comprising limiting piece, the limiting piece is located in the upper side of the material guide groove, and is used to limit workpiece in the material guide groove in vertical direction.
5. The packaging fixture of claim 4, wherein, The limiting piece includes connecting part and limiting part, the connecting part is connected with the first pressure maintaining structure, the limiting part is located directly above the material guide groove, the limiting part and the groove wall of the material guide groove jointly define to form the material passing channel allowing workpiece to pass through, and the limiting part and the first pressure maintaining surface form the material passing gap allowing film material to pass through.
6. The packaging fixture of claim 1, wherein, Second pressure maintaining surface is formed on the second pressure maintaining structure, the second pressure maintaining surface is located in the upper side of the material guide groove, the second pressure maintaining surface extends along horizontal direction, and is used to extrude the upper end surface of workpiece in the material guide groove.
7. The packaging fixture of claim 6, wherein, The second pressure maintaining structure and the second bending piece are integrally provided, and the second pressure maintaining surface is smoothly connected with the second bending surface.
8. The packaging fixture of claim 7, wherein, The second bending piece is detachably provided on the jig body through threaded connecting piece.
9. The packaging fixture of claim 1, wherein, The first bending piece, the second bending piece, the first pressure maintaining structure and the second pressure maintaining structure jointly constitute a bending subunit, and both sides of the material guide groove in its width direction are respectively provided with a bending subunit.
10. The packaging fixture of claim 9, wherein, The jig body is provided with a plurality of material guide grooves in parallel, each material guide groove is adapted to a kind of specification workpiece, and each material guide groove corresponds two bending subunits.