CN215974277U - Adhesive tape sticking device - Google Patents

Abstract

The application provides a rubberizing device, includes: a support; the adhesive tape storage wheel is rotatably arranged on the bracket and is provided with an adhesive tape; the sticking assembly comprises a sticking part and a cutter, the sticking part is fixedly connected with the bracket, and the cutter is movably connected with the bracket; the guide part is arranged between the adhesive tape storage wheel and the cutter and is movably connected with the bracket; the transmission mechanism drives the cutter and the guide part to move towards the adhesive tape lapped between the guide part and the pasting part so as to cut the adhesive tape; the transmission mechanism drives the cutter and the guide part to move towards the direction far away from the adhesive tape lapped between the guide part and the pasting part so as to guide the adhesive tape to extend out of a part from the cutter towards the direction far away from the adhesive tape storage wheel. The adhesive tape sticking device can automatically pull out part of the adhesive tape before the next sticking action so as to facilitate the next sticking action and further improve the adhesive tape sticking efficiency of the adhesive tape sticking device.

Description

Adhesive tape sticking device

Technical Field

The application belongs to the technical field of rubberizing devices, and particularly relates to a rubberizing device.

Background

The double faced adhesive tape is required to be pasted to fix parts in the liquid crystal display television often, in order to guarantee the pasting quality and pasting efficiency of the adhesive tape, the precision of millimeter level and the faster pasting speed are required to be pasted and covered manually, the requirement on manpower is higher, and the appearance of the adhesive tape pasting device greatly relieves the above conditions.

The existing tape applicators generally require manual tape extension before the next application is performed in order to facilitate the next application, however, the manual tape extension reduces the application efficiency of the tape applicator.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a rubberizing ware to solve the problem that the mode of current manual extension sticky tape can reduce the gluey efficiency of rubberizing ware.

The embodiment of the application provides a rubberizing ware, includes:

a support;

the adhesive tape storage wheel is rotatably arranged on the bracket, and an adhesive tape is arranged on the adhesive tape storage wheel;

the sticking assembly comprises a sticking part and a cutter, the sticking part is fixedly connected with the bracket, and the cutter is movably connected with the bracket;

the guide part is arranged between the adhesive tape storage wheel and the cutter and is movably connected with the bracket; and

a transmission mechanism driving the cutter and the guide portion to move toward an adhesive tape lapped between the guide portion and the attaching portion to cut the adhesive tape; the transmission mechanism drives the cutter and the guide part to move towards the direction far away from the adhesive tape lapped between the guide part and the pasting part so as to guide the adhesive tape to extend out of a part from the cutter towards the direction far away from the adhesive tape storage wheel.

Optionally, the bracket is provided with a first limiting groove, the guiding portion includes a ratchet wheel and a spring plate, the ratchet wheel is movable in the first limiting groove, the spring plate is rotatably mounted on the bracket, and the spring plate is lapped on the ratchet wheel and rotates along with the ratchet wheel; the elastic sheet is abutted against the ratchet wheel to limit the rotation of the ratchet wheel.

Optionally, the rubberizing device further comprises a limiting wheel, the limiting wheel is arranged between the ratchet wheel and the adhesive tape storage wheel, the limiting wheel is rotatably mounted on the support, and the limiting wheel is used for limiting the adhesive tape from the adhesive tape storage wheel to the ratchet wheel.

Optionally, the support further has a second limiting groove, the second limiting groove and the first limiting groove are arranged at an interval, and the cutter can move in the second limiting groove.

Optionally, the second limiting groove is in a circular arc shape which is bent away from the adhesive tape storage wheel.

Optionally, the transmission mechanism includes:

one end of the wrench is rotatably connected with the bracket, and the other end of the wrench is a free end;

the connecting plate, with spanner swing joint, just one end rotatable connect in of connecting plate in the support, the other end of connecting plate respectively with the cutter with guide portion swing joint.

Optionally, the transmission mechanism further includes:

the spanner is connected to the one end that resets, the other end that resets is connected the support, the piece that resets can be when the external force is got rid of the spanner resets to initial condition.

Optionally, the connecting plate is disposed on a side of the support facing away from the adhesive tape storage wheel.

Optionally, the rubberizing device further comprises:

the rotary shaft is used for storing the adhesive tape storage wheel, the support and the connecting plate in series connection, the rotary shaft is fixedly connected with the support, and the rotary shaft is respectively connected with the adhesive tape storage wheel and the connecting plate in a rotatable mode.

Optionally, the pasting part is provided with a fixed end and a probe end which are connected with each other, the fixed end is fixedly connected with the support, the probe end faces away from one end of the adhesive tape storage wheel and protrudes out of the support, and the probe end is used for pressing the adhesive tape on the surface of the workpiece.

The utility model provides a rubberizing ware, move towards the sticky tape of overlap joint between guide portion and subsides portion of covering through setting up drive cutter and guide portion, in order to cut off the sticky tape, drive cutter and guide portion move towards keeping away from the sticky tape of overlap joint between guide portion and subsides portion of covering, in order to guide the sticky tape to deposit the drive mechanism that wheel is extended a part towards the direction of keeping away from the sticky tape from the cutter, make the rubberizing ware can automatic traction out partial sticky tape before the action is pasted next time, in order to make things convenient for going on of pasting the action next time, and then can improve the rubberizing efficiency of rubberizing ware.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that other drawings can be derived from these drawings by a person skilled in the art without inventive effort.

For a more complete understanding of the present application and its advantages, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts in the following description.

Fig. 1 is a schematic structural diagram of a first angle of a tape applicator according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a second angle of the tape applicator according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a third angle of the tape applicator according to the embodiment of the present application.

Fig. 4 is a schematic structural diagram of a fourth angle of the tape applicator according to the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the manufacturing process of the liquid crystal television, some small parts need to be fixed by glue, for example, some parts are fixed by using double-sided adhesive tape. In order to ensure the quality of tape application such as the flatness of the applied tape and the efficiency of applying parts, it is usually necessary to manually achieve millimeter-scale precision and faster application speed. This requires a high level of labor, and the need for auxiliary applicators has increased. The appearance of the rubberizing device greatly relieves the condition of high requirement on labor. The existing tape applicator usually needs to manually extend a part of the tape after the last pasting operation is finished and before the next pasting operation is started, so as to facilitate the next pasting operation, however, the manual tape extension mode can reduce the pasting efficiency of the tape applicator.

The embodiment of the present application provides a tape applicator to solve the problem that the existing manner of manually extending a tape may reduce the application efficiency of the tape applicator, and will be described below with reference to the accompanying drawings.

For example, please refer to fig. 1, fig. 1 is a schematic structural diagram of a first angle of a tape applicator according to an embodiment of the present application. The embodiment of the application provides a rubberizing device 1, and the rubberizing device 1 comprises a holding part 10, a support 20, a tape storage wheel 30, a coating assembly 40, a guide part 50 and a transmission mechanism 60. The bracket 20 is fixedly connected with the holding part 10. The adhesive tape storage wheel 30 is rotatably mounted on the bracket 20, and an adhesive tape 31 is provided on the adhesive tape storage wheel 30. The pasting component 40 comprises a pasting part 42 and a cutter 44, wherein the pasting part 42 is fixedly connected with the bracket 20, and the cutter 44 is movably connected with the bracket 20. The guide portion 50 is disposed between the tape storage wheel 30 and the cutter 44, and the guide portion 50 is movably coupled to the bracket 20. The transmission mechanism 60 drives the cutter 44 and the guide portion 50 to move toward the adhesive tape 31 overlapped between the guide portion 50 and the application portion 42 to cut the adhesive tape 31; the driving mechanism 60 drives the cutter 44 and the guide portion 50 to move away from the adhesive tape 31 overlapped between the guide portion 50 and the applying portion 42 to guide the adhesive tape 31 to extend from the cutter 44 to a portion away from the adhesive tape storage wheel 30. Through setting up drive cutter 44 and guide portion 50 and moving towards the sticky tape 31 of lapping between guide portion 50 and subsides portion 42, with cutting off sticky tape 31, drive cutter 44 and guide portion 50 move towards keeping away from the sticky tape of lapping between guide portion 50 and subsides portion 42, with guide sticky tape 31 from cutter 44 towards keeping away from the direction of sticky tape storage wheel 30 and extending a partial drive mechanism 60, make rubberizing ware 1 can pull out partial sticky tape 31 automatically before the action of pasting next time, with the going on of convenient next action of pasting, and then can improve the rubberizing efficiency of rubberizing ware 1.

Referring to fig. 2 and fig. 3 in combination with fig. 1, fig. 2 is a schematic structural diagram of a second angle of the tape applicator according to the embodiment of the present application, and fig. 3 is a schematic structural diagram of a third angle of the tape applicator according to the embodiment of the present application. The grip portion 10 is used to provide space for a human hand to hold, and the shape of the main body portion of the grip portion 10 can be adapted to the design of the human hand to facilitate the holding. Illustratively, the main body portion of the grip 10 may be a rectangular column, and the length of the main body portion of the grip 10 may be greater than the width of the palm of a human hand. Wherein, the grip portion 10 may be provided with a base, and the area of the bottom surface of the base may be larger than the cross-sectional area of the main portion of the grip portion 10, so that the tape applicator 1 may stand on the base or be placed on a table. The other end of the grip portion 10 opposite to the base may be designed with a notch, and the shape of the other end of the grip portion 10 may gradually shrink from the main body of the grip portion 10, that is, the other end of the grip portion 10 is triangular or trapezoidal, so as to facilitate the installation of other components of the applicator 1.

The support 20 is used to support or mount components of the applicator 1 such as the tape storage wheel 30, the cutter 44, etc. The shape and size of the holder 20 may be designed according to the size of the tape storage wheel 30, the cutter 44, and the like. Illustratively, the bracket 20 may be a triangular plate, one corner of the triangular plate is connected to the grip portion 10, and the bracket 20 may be connected to the grip portion 10 in various ways, for example, the bracket 20 may be fixed to the grip portion 10 by screws. For another example, the bracket may be fixed to the grip portion 10 by an adhesive. Of course, the bracket 20 and the holding portion 10 can be connected by other means, which is not illustrated here. The other two corners of the bracket 20 are used to mount the application assembly 40 and the tape storage wheel 30. The shape and size of the support 20 may have other forms, and the shape of the support 20 is illustrated as triangular, but should not be construed as limiting the shape of the support 20.

The adhesive tape storage wheel 30 is provided with an adhesive tape 31, and the adhesive tape storage wheel 30 is rotatably mounted on the bracket 20, so that the adhesive tape storage wheel 30 can release the adhesive tape 31 by external traction on the adhesive tape 31 and rotation of the adhesive tape storage wheel 30. Illustratively, the tape storage wheel 30 may be in the shape of a circular wheel with an annular groove that stores the tape 31. The disc portion of the tape storage wheel 30 may be provided with through holes to reduce the weight of the tape storage wheel 30. The tape dispenser 1 may further include a rotating shaft 70, the rotating shaft 70 is fixed to the bracket 20, the tape storage wheel 30 may be connected to the bracket 20 through the rotating shaft 70, and the tape storage wheel 30 may rotate with respect to the rotating shaft 70. For example, the tape storage wheel 30 may be disposed at a corner of the bracket 20 other than the corner of the bracket 20 mounted to the grip portion 10.

Illustratively, the application assembly 40 is mounted at a corner of the frame 20 opposite the tape storage wheel 30. It will be understood that the portions of the application member 40, the tape storage wheel 30 and the support frame 20 connected to the grip portion 10 are located at three corners of the triangular support frame 20, wherein the top corners of the triangle may be the portions connected to the grip portion 10, and the two bottom corners of the triangle are located at the tape storage wheel 30 and the application member 40, respectively, i.e., the portions of the support frame 20 connected to the grip portion 10 are located between the tape storage wheel 30 and the application member 40.

The applying assembly 40 includes an applying portion 42 and a cutter 44, the cutter 44 is used for cutting the adhesive tape 31, and the shape of the cutter 44 is not limited herein and can be any shape that facilitates cutting the adhesive tape 31. For example, the cutting surface of the cutter 44 may be serrated, and the serrated cutter 44 may cut the adhesive tape 31 by tensioning the adhesive tape 31. The knife 44 may be movably connected to the frame 20, i.e., the knife 44 may be movable relative to the frame 20. Illustratively, the bracket 20 may be provided with a second retaining groove 22. The cutter 44 is movable within the second restraint slot 22. The second limiting groove 22 may have a curved shape away from the tape storage wheel 30, and the curved shape may guide the cutter 44 to move from the middle portion of the support 20 to the middle upper portion of the support 20. The cutter 44 is not in contact with the adhesive tape 31 when it is in the middle of the holder 20, and the cutter 44 can cut the adhesive tape when it is in the middle-upper part of the holder 20. The attachment portion 42 may be removably attached to the bracket 20, for example, by screws that secure the attachment portion 42 to the bracket 20. Illustratively, the attaching portion 42 has a fixing end 421 and a probe end 422 connected to each other, and the fixing end 421 can be fixedly connected to the holder 20 by a screw. The probe end 422 projects from the support 20 toward the end away from the tape storage wheel 30, and the probe end 422 is used for pressing the adhesive tape 31 on the surface of the workpiece. For example, the applying portion 42 may be made of a diamond material, and the probe end 422 may be triangular, that is, the end of the probe end 422 may be pointed to facilitate the applying of the applicator 1 at a narrow position. Compare in the pressure of gyro wheel form and cover, rubberizing ware 1 of this application embodiment can get into narrow and small position and paste, has expanded rubberizing ware 1's range of application. The attachment portion 42 further includes an attachment surface 423, the attachment surface 423 being located on a side of the cutter 44 away from the tape storage wheel 30, the attachment surface 423 being used to press and smooth the tape on the surface of the workpiece when the tape is attached. It should be noted that the area of the attaching surface 423 may be small, that is, the width of the attaching surface 423 is set to be a small value, and only the portion of the attaching surface 423 is needed to press and smooth the adhesive tape. The application portion 42 may also assist in applying and maintaining pressure at a narrow location. In which the applying portion 42 may reserve a space for the movement of the cutter 44, and when the cutter 44 is located at the middle upper portion of the bracket 20, the tip of the cutter 44 may contact the applying portion 42 or be close to the applying portion 42.

The guide portion 50 serves to guide the tape to protrude. Illustratively, the guiding portion 50 may include a ratchet 51 and a spring piece 52, and the ratchet 51 may rotate relative to the bracket 20 and move relative to the bracket 20. Illustratively, the bracket 20 has a first limiting groove 21, and the first limiting groove 21 is spaced apart from a second limiting groove 22. The shape of the first limiting groove 21 may be the same as the shape of the second limiting groove 22, for example, the shape of the first limiting groove 21 may also be a circular arc, the ratchet 51 may move in the first limiting groove 21, and the ratchet 51 may rotate relative to the bracket 20. The elastic piece 52 is rotatably mounted on the bracket 20, and the elastic piece 52 is arranged close to the ratchet 51. The spring 52 has different functions in different positions. The spring piece 52 is connected to the ratchet 51 and rotates along with the ratchet 51. The spring piece 52 abuts against the ratchet 51 to restrict the rotation of the ratchet 51. The ratchet 51 can rotate and drive a portion of the adhesive tape 31 to extend from the cutter 44 to a direction away from the adhesive tape storage wheel 30, so as to facilitate the next adhering operation, thereby improving the adhering efficiency of the adhesive tape applicator 1.

Wherein, the guiding part 50 may further include a limiting wheel 80, and the limiting wheel 80 is disposed between the ratchet wheel 51 and the adhesive tape storage wheel 30. The spacing wheel 80 is rotatably mounted on the bracket 20. The limiting wheel 80 is used to limit the portion of the tape 31 from the tape storage wheel 30 to the ratchet wheel 51, i.e., to limit the path of the tape 31, and to prevent the tape 31 from running out of the applicator 1.

For example, please refer to fig. 4 in combination with fig. 1 to 3, and fig. 4 is a schematic structural diagram of a fourth angle of the tape applicator according to the embodiment of the present application. The transmission mechanism 60 is used to drive the movement of the cutter 44 and the guide 50, i.e. the transmission mechanism 60 is the power source for the cutter 44 and the guide 50. Illustratively, the transmission 60 may include a wrench 61 and a connecting plate 62. One end of the wrench 61 is rotatably connected to the bracket 20, and the other end of the wrench 61 is a free end. The connecting plate 62 is movably connected with the wrench 61, one end of the connecting plate 62 is rotatably connected with the bracket 20, and the other end of the connecting plate 62 is movably connected with the cutter 44 and the guiding part 50 respectively. Illustratively, the connecting plate 62 may be provided with three slots, and the wrench 61 may move relative to one of the slots, since one end of the connecting plate 62 is rotatably connected to the bracket 20, that is, the wrench 61 may move the connecting plate 62 relative to the bracket 20. A groove connected with the wrench 61 may be provided at an intermediate position of the connection plate 62. The other two slots of the coupling plate 62 may be movably connected with the cutter 44 and the ratchet 51 of the guide 50, respectively, i.e. the cutter 44 and the ratchet 51 may move in the slots of the coupling plate 62. It will be appreciated that the driving means of the driving mechanism 60, which is the lever principle, is the driving manner of the wrench 61, the wrench 61 drives the connecting plate 62 to rotate relative to the bracket 20, and the movement of the connecting plate 62 can drive the position of the cutter 44 and the ratchet 51 to change relative to the bracket 20. Wherein, the connecting plate 62 is disposed on a side of the support 20 opposite to the adhesive tape storage wheel 30. Illustratively, the adhesive tape storage wheel 30, the bracket 20 and the connecting plate 62 can be connected in series through the rotating shaft 70, the bracket 20 is located between the adhesive tape storage wheel 30 and the connecting plate 62, the rotating shaft 70 is fixedly connected with the bracket 20, and both the adhesive tape storage wheel 30 and the connecting plate 62 can rotate relative to the bracket 20 through the rotating shaft 70.

The driving force source of the wrench 61 may be manual or motor-driven, and the above description is given by taking the driving force source of the wrench 61 as manual, but should not be construed as limiting the driving force source of the wrench 61.

The transmission mechanism 60 may further include a reset member 63, one end of the reset member 63 is connected to the wrench 61, the other end of the reset member 63 is connected to the bracket 20, and the reset member 63 may reset the wrench 61 to the initial state when the external force is removed. For example, the reset member 63 may be a compression spring, and the initial state of the reset member 63 is an uncompressed state, and the reset member 63 is compressed and deformed when an external force is applied. When the external force is removed, the restoring member 63 may be automatically restored to the initial state of the restoring member 63 by the restoring force of the spring.

In the gumming device 1 provided by the embodiment of the application, the gumming device 1 comprises a holding part 10, a bracket 20, a tape storage wheel 30, a coating assembly 40, a guide part 50 and a transmission mechanism 60. The bracket 20 is fixedly connected with the holding part 10. The adhesive tape storage wheel 30 is rotatably mounted on the bracket 20, and an adhesive tape 31 is provided on the adhesive tape storage wheel 30. The pasting component 40 comprises a pasting part 42 and a cutter 44, wherein the pasting part 42 is fixedly connected with the bracket 20, and the cutter 44 is movably connected with the bracket 20. The guide portion 50 is disposed between the tape storage wheel 30 and the cutter 44, and the guide portion 50 is movably coupled to the bracket 20. The transmission mechanism 60 drives the cutter 44 and the guide portion 50 to move toward the adhesive tape 31 overlapped between the guide portion 50 and the application portion 42 to cut the adhesive tape 31; the driving mechanism 60 drives the cutter 44 and the guide portion 50 to move away from the adhesive tape 31 overlapped between the guide portion 50 and the applying portion 42 to guide the adhesive tape 31 to extend from the cutter 44 to a portion away from the adhesive tape storage wheel 30. Through setting up drive cutter 44 and guide portion 50 and moving towards the sticky tape 31 of lapping between guide portion 50 and subsides portion 42, with cutting off sticky tape 31, drive cutter 44 and guide portion 50 move towards keeping away from the sticky tape of lapping between guide portion 50 and subsides portion 42, with guide sticky tape 31 from cutter 44 towards keeping away from the direction of sticky tape storage wheel 30 and extending a partial drive mechanism 60, make rubberizing ware 1 can pull out partial sticky tape 31 automatically before the action of pasting next time, with the going on of convenient next action of pasting, and then can improve the rubberizing efficiency of rubberizing ware 1.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features.

The above detailed descriptions of the tape applicators provided by the embodiments of the present application, and the specific examples applied herein are provided to explain the principles and embodiments of the present application, and the descriptions of the above embodiments are only used to help understand the method and the core ideas of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. An adhesive applicator, comprising:

a support;

the adhesive tape storage wheel is rotatably arranged on the bracket, and an adhesive tape is arranged on the adhesive tape storage wheel;

the sticking assembly comprises a sticking part and a cutter, the sticking part is fixedly connected with the bracket, and the cutter is movably connected with the bracket;

the guide part is arranged between the adhesive tape storage wheel and the cutter and is movably connected with the bracket; and

a transmission mechanism driving the cutter and the guide portion to move toward an adhesive tape lapped between the guide portion and the attaching portion to cut the adhesive tape; the transmission mechanism drives the cutter and the guide part to move towards the direction far away from the adhesive tape lapped between the guide part and the pasting part so as to guide the adhesive tape to extend out of a part from the cutter towards the direction far away from the adhesive tape storage wheel.

2. The rubberizing device according to claim 1, wherein the bracket has a first limiting groove, the guiding portion comprises a ratchet wheel and a spring plate, the ratchet wheel is movable in the first limiting groove, the spring plate is rotatably mounted on the bracket, and the spring plate is lapped on the ratchet wheel and rotates along with the ratchet wheel; the elastic sheet is abutted against the ratchet wheel to limit the rotation of the ratchet wheel.

3. The applicator of claim 2, further comprising a limiting wheel disposed between the ratchet wheel and the tape storage wheel, the limiting wheel being rotatably mounted to the bracket, the limiting wheel being configured to limit the portion of tape from the tape storage wheel to the ratchet wheel.

4. The applicator of claim 2, wherein the holder further comprises a second retaining groove spaced from the first retaining groove, the knife being movable within the second retaining groove.

5. The taping device of claim 4, wherein the second limiting groove is in the shape of a circular arc curved away from the tape storage wheel.

6. The applicator of claim 1, wherein the drive mechanism comprises:

one end of the wrench is rotatably connected with the bracket, and the other end of the wrench is a free end;

the connecting plate, with spanner swing joint, just one end rotatable connect in of connecting plate in the support, the other end of connecting plate respectively with the cutter with guide portion swing joint.

7. The applicator of claim 6, wherein the drive mechanism further comprises:

the spanner is connected to the one end that resets, the other end that resets is connected the support, the piece that resets can be when the external force is got rid of the spanner resets to initial condition.

8. The taping machine of claim 6, wherein the connecting plate is disposed on a side of the stand facing away from the tape storage wheel.

9. The applicator of claim 8, further comprising:

the rotary shaft is used for storing the adhesive tape storage wheel, the support and the connecting plate in series connection, the rotary shaft is fixedly connected with the support, and the rotary shaft is respectively connected with the adhesive tape storage wheel and the connecting plate in a rotatable mode.

10. An applicator according to any one of claims 1 to 9, wherein said application portion has a fixed end and a probe end connected to each other, said fixed end being fixedly connected to said holder, said probe end projecting from said holder toward an end remote from said tape storage wheel, said probe end being adapted to press the tape against the surface of the workpiece.

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