An arrangement and conveying device for producing and processing chip inductors
By setting limit components and push-out structures in the chip inductor production equipment, the problem of scratches on the workpiece during push-out is solved, and the workpiece surface protection and quality assurance are achieved.
Patent Information
- Application Number
- CN202411983868.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2044-12-31
AI Technical Summary
Existing chip inductor production equipment easily causes scratches on the workpiece surface when pushing the workpiece, affecting product quality.
A limit assembly and a push structure are set at the output end of the trough to first press and fix the secondary workpiece, and then deviate along the workpiece arrangement direction to provide loose space for the primary workpiece, reduce friction and avoid scratches.
Effectively reduce surface scratches on workpieces, ensure product quality, improve production efficiency and reduce equipment costs.
Smart Images
Figure CN119929468B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of electronic component processing equipment, and more specifically, to an arrangement and conveying device for producing and processing chip inductors. Background Art
[0002] In the production of chip inductors, many processing links require single processing of the workpiece. The conventional operation is to arrange the workpieces by a vibrating loading tray, and then push the workpieces out one by one at the end of the arrangement through a pushing structure.
[0003] Although most of the equipment currently adopts this structure, it also has a defect that is easily overlooked: the workpieces at the end positions are closely arranged. When pushing the workpiece in the first position, it is actually pushing against the adjacent workpieces. This action may cause scratches on the surfaces of these two workpieces. For some workpieces with tight processing requirements or subsequent secondary processing, it may even affect the subsequent processing and overall product quality. Therefore, this problem needs to be improved. Summary of the Invention
[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to propose an arranging and conveying device for the production and processing of chip inductors. When the workpiece is pushed and separated, it can clamp the second workpiece and provide space for the first workpiece to move, effectively reducing the friction between the two and preventing the surface of the workpiece from being scratched or damaged.
[0005] To achieve this object, the present invention adopts the following technical solutions:
[0006] The present invention provides an arranging and conveying device for the production and processing of chip inductors, comprising a trough for closely arranging workpieces; a limiting component is installed at the output end of the trough to block the output port of the trough, thereby forming a discharge position for accommodating the placement of a workpiece; a pushing structure is installed on the side wall of the output end of the trough, corresponding to the discharge position setting; when the pushing structure pushes the workpiece, it first presses and fixes the adjacent workpiece on the upstream side of the discharge position; then, the limiting component is pushed to deviate from the limiting component to a side away from the center of the trough along the workpiece arrangement direction; then, the workpiece released at the discharge position is pushed to send the workpiece to the outside.
[0007] In a preferred technical solution of the present invention, an open opening penetrating through both side walls is provided at the output end of the material trough; the limiting assembly includes a slide, and a baffle is fixedly provided on the top of the side of the slide away from the center of the material trough, the baffle extends upward, and both sides of the baffle slide against the two opposite inner walls of the material trough, and the enclosure between the side walls of the baffle, the top surface of the slide, and the two side walls of the material trough forms a material discharge position; at least one first guide bolt is movably provided on the end face of the material trough, and the end of the first guide bolt is threadedly connected to the slide, and a first spring is sleeved on the first guide bolt, and the first spring provides the slide with a thrust toward the side of the center of the material trough to maintain the width of the material discharge position adapted to the width of a workpiece; when the pushing structure pushes the workpiece, it provides the slide with a force to overcome the first spring, so that the slide moves toward the direction of the first guide bolt, increases the width of the material discharge position, and makes the workpiece at the material discharge position break away from the tightly arranged state.
[0008] In a preferred technical solution of the present invention, when the push structure pushes the workpiece, the slide moves 0.5 mm to 1 mm in the direction of the first guide bolt.
[0009] In a preferred technical solution of the present invention, the pushing structure includes a cylinder and a push plate installed at the end of the piston rod of the cylinder, and the push plate is equipped with a pushing assembly, a pushing assembly, and a unloading push rod; the unloading push rod is set corresponding to the unloading position, and is used to push the workpiece at the unloading position to the outside; a first through-hole is provided on the side wall of the trough near the upstream side of the open mouth, and the first through-hole is set corresponding to the second arrangement station, and the pushing assembly is set corresponding to the first through-hole, and is used to press and fix the workpiece at the arrangement station; the pushing assembly is set corresponding to the slide, and is used to push the slide to move in the direction of the first guide bolt.
[0010] In a preferred technical solution of the present invention, the pushing assembly includes a push block, a second guide bolt, and a second spring; the second guide bolt is slidably inserted into the push plate, the end of the second guide bolt is threadedly connected and fixed on the push block, and the second spring is sleeved on the second guide bolt; the cylinder drives the push plate to push in the direction of the lower material level, and after the push plate moves to the preset position, it applies force to the second spring, and the pushing block cooperates with the slide, and the pushing slide moves in the direction of the first guide bolt.
[0011] In a preferred technical solution of the present invention, a first inclined surface is provided on the side of the push block close to the first guide bolt, and the first inclined surface deviates toward the center of the trough at one end away from the second guide bolt; a snap fits the shape of the push block on the side wall of the slide close to the pushing assembly, and a second inclined surface is provided corresponding to the snap fit; the first inclined surface and the second inclined surface are in abutment and sliding connection, and the push block that pushes inward pushes the slide toward the direction of the first guide bolt.
[0012] In a preferred technical solution of the present invention, the second guide bolt includes a first column and a second column connected to each other, the end of the first column is provided with a thread, and a first threaded hole is provided on the wall surface of the push block, and the first column is threadedly connected to the push block; the diameter of the second column is larger than the diameter of the first column, and a first circular hole is provided on the push plate corresponding to the second column; the two ends of the second spring are respectively fixed with a sliding sleeve and a first pressure ring, and the outer wall of the sliding sleeve is fixed with a second pressure ring, and the inner diameters of the sliding sleeve and the first pressure ring are both adapted to the diameter of the first column, and the second spring is slidably arranged on the first column through the sliding sleeve and the first pressure ring; the outer diameter of the sliding sleeve is adapted to the diameter of the second column, and the push plate, after being pushed inward to a preset position, drives the sliding sleeve to move, thereby compressing the second spring.
[0013] In a preferred technical solution of the present invention, a guide block is fixedly provided on the wall surface of the push block close to the center of the trough, and a guide groove is correspondingly provided on the side wall of the open mouth. The guide groove forms a narrowing portion at the groove position, and the shape of the guide block is adapted to the shape of the guide groove. The push block is slidably clamped in the guide groove through the guide block.
[0014] In a preferred technical solution of the present invention, the pushing assembly includes a pressure rod and a third spring. The pressure rod is slidably inserted into the push plate, and the end is limited by a retaining spring. A third pressure ring is fixedly provided on the side wall of the pressure rod close to the material trough, and the third spring is sleeved on the pressure rod and clamped between the third pressure ring and the push plate. The end of the pressure rod away from the push plate is adapted to be inserted into the first through-hole, and the distance between the end face of the pressure rod and the surface of the third pressure ring is adapted to the depth of the first through-hole, and a rubber pad is fixed on the end face of the pressure rod.
[0015] The beneficial effects of the present invention are:
[0016] The present invention provides an arrangement and conveying device for the production and processing of chip inductors. An adjustable and movable limit assembly is provided at the output end of the material trough. During the process of pushing and unloading the workpiece, the pushing structure first presses and fixes the adjacent workpiece arranged in the next position to prevent the subsequent continuous incoming material from affecting the pushing and unloading action.
[0017] After the clamping is completed, the limit assembly is pushed to deviate from the position to the side away from the center of the trough along the workpiece arrangement direction, providing loose space for the first workpiece, at least reducing the friction between the first workpiece and the second workpiece, and then the loosened workpiece at the lower material position is pushed to send the workpiece to the outside, effectively reducing the problem of scratches and damage on the workpiece surface and ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of an arrangement and conveying device for producing and processing chip inductors provided in a specific embodiment of the present invention;
[0019] Figure 2It is a schematic diagram of the three-dimensional expanded structure of an arrangement and conveying device for producing and processing chip inductors provided in a specific embodiment of the present invention;
[0020] Figure 3 1 is a schematic diagram of the three-dimensional structure of a trough provided in a specific embodiment of the present invention;
[0021] Figure 4 is a schematic diagram of the three-dimensional structure of a limit assembly provided in a specific embodiment of the present invention;
[0022] Figure 5 is a schematic diagram of the three-dimensional structure of the push structure provided in a specific embodiment of the present invention;
[0023] Figure 6 is a schematic diagram of a three-dimensional unfolded structure of a push structure provided in a specific embodiment of the present invention from a first perspective;
[0024] Figure 7 It is a schematic diagram of the three-dimensional unfolded structure from a second perspective of the pushing structure provided in a specific embodiment of the present invention.
[0025] In the picture:
[0026] 100, trough; 110, open mouth; 120, first through hole; 130, guide groove;
[0027] 200, limit assembly; 210, slide; 211, bayonet; 212, second inclined surface; 220, baffle; 230, first guide bolt; 240, first spring; 300, unloading position;
[0028] 400, push structure; 410, cylinder; 420, push plate; 430, push assembly; 431, pressure rod; 432, third spring; 433, third pressure ring; 434, rubber pad;
[0029] 440, push assembly; 441, push block; 442, second guide bolt; 4421, first column; 4422, second column;
[0030] 443. Second spring; 444. First inclined surface; 445. Sliding sleeve; 446. First pressure ring; 447. Second pressure ring; 448. Guide block; 450. Blanking push rod. DETAILED DESCRIPTION
[0031] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.
[0032] like Figures 1 to 3As shown, a specific embodiment of the present invention discloses an arranging and conveying device for the production and processing of chip inductors, including a material trough 100 for closely arranging workpieces; a limiting component 200 is installed at the output end of the material trough 100 to block the output port of the material trough, thereby forming a discharge position 300 for accommodating the placement of a workpiece; a pushing structure 400 is installed on the side wall of the output end of the material trough 200, corresponding to the discharge position 300; when the pushing structure pushes the workpiece, it first presses and fixes the adjacent workpiece on the upstream side of the discharge position; then the limiting component is pushed to deviate from the limiting component to the side away from the center of the material trough along the workpiece arrangement direction; then the workpiece released at the discharge position is pushed to send the workpiece to the outside.
[0033] The aforementioned arrangement and conveying device for chip inductor production and processing is provided with an adjustable limit assembly at the output end of the material trough. During the process of pushing and unloading the workpiece, the pushing structure first presses and fixes the adjacent workpiece arranged in the next position to prevent the subsequent continuous incoming material from affecting the pushing and unloading action.
[0034] After the clamping is completed, the limit assembly is pushed to deviate from the position to the side away from the center of the trough along the workpiece arrangement direction, providing loose space for the first workpiece, at least reducing the friction between the first workpiece and the second workpiece, and then the loosened workpiece at the lower material position is pushed to send the workpiece to the outside, effectively reducing the problem of scratches and damage on the workpiece surface and ensuring product quality.
[0035] Furthermore, if Figure 3 As shown, the output end of the trough 100 is provided with an open port 110 penetrating both side walls; Figure 1 、 Figure 4 As shown, the limiting assembly 200 includes a slide 210. A baffle 220 is fixedly provided on the top of the side of the slide 210 away from the center of the trough. The baffle extends upward, and the two sides of the baffle 220 slide against the two opposite inner walls of the trough 100. The baffle side walls, the top surface of the slide, and the two side walls of the trough form a material unloading position; the slide part presents an L-shaped structure, which can limit the end and accommodate the workpiece without affecting the unloading by side pushing.
[0036] At least one first guide bolt 230 is movably provided on the end surface of the trough 100, and the end of the first guide bolt 230 is threadedly connected to the slide 210. A first spring 240 is sleeved on the first guide bolt 230, and the first spring provides the slide with a thrust toward the center of the trough to maintain the width of the unloading position adapted to the width of a workpiece; because the baffle is slidably supported on the inner wall of the trough, it is limited in this direction, and the direction limitation of the first guide bolt ensures that the entire slide can only move along the feeding direction of the trough; the first spring provides elastic support for the slide, on the one hand, it can enable the slide to maintain a close fit with the trough, and maintain the width of the unloading position at the required workpiece width size; on the other hand, it can provide a basis for pushing deformation, so that the slide can be separated from the trough, providing space for the workpiece to move, and facilitating pushing and unloading;
[0037] When pushing the workpiece, the push mechanism provides the slide with force to overcome the first spring, causing the slide to move toward the first guide bolt, widening the discharge position and allowing the workpieces at the discharge position to break away from their tightly packed state. The overall linkage structure simplifies the design and layout of external power components, reduces the difficulty of operation and debugging, and also reduces costs.
[0038] Furthermore, when the push structure pushes the workpiece, the slide moves 0.5mm to 1mm in the direction of the first guide bolt. The loosening distance does not need to be too much, and the friction can be reduced. The above range limitation is adopted to meet the above requirements, and it is also convenient for the workpiece to be aligned with the downstream equipment, which is convenient for subsequent processing.
[0039] Furthermore, if Figures 5 to 7 As shown, the pushing structure 400 includes a cylinder 410, a push plate 420 installed at the end of the piston rod of the cylinder 410, and the push plate 420 is installed with a pushing assembly 430, a pushing assembly 440, and a material discharge push rod 450; the material discharge push rod is set corresponding to the material discharge position, and is used to push the workpiece at the material discharge position to the outside; a first through-hole 120 is provided on the side wall of the trough 100 on the upstream side of the open mouth 110, and the first through-hole corresponds to the second arrangement station, and the pushing assembly 430 is set corresponding to the first through-hole 120, and is used to press and fix the workpiece at the arrangement station; the pushing assembly 440 is set corresponding to the slide 210, and is used to push the slide to move in the direction of the first guide bolt; the design of the entire pushing structure drives the push plate and its upper components to move synchronously through the single power component of the cylinder, thereby achieving multiple functional effects, effectively improving work efficiency, and reducing equipment costs and subsequent maintenance costs.
[0040] Furthermore, the pushing assembly 440 includes a pushing block 441, a second guide bolt 442, and a second spring 443; the second guide bolt 442 is slidably penetrated on the pushing plate 420, the end of the second guide bolt 442 is threadedly connected and fixed on the pushing block 441, and the second spring 443 is sleeved on the second guide bolt 442; the cylinder drives the pushing plate to push in the direction of the material position, and after the pushing plate moves to the preset position, it applies force to the second spring, and the pushing block cooperates with the slide, and the pushing slide moves in the direction of the first guide bolt; the above structural design limits the pushing assembly to not start at the first time the pushing plate moves, and it needs to wait until the pushing assembly completes the pressing before moving, to ensure that only the first workpiece is pushed and unloaded.
[0041] Furthermore, a first inclined surface 444 is provided on the side of the push block 441 close to the first guide bolt, and the first inclined surface deviates toward the center of the trough at one end away from the second guide bolt; a slot 211 that matches the shape of the push block 441 is provided on the side wall of the slide 210 close to the pushing assembly, and a second inclined surface 222 is provided corresponding to the slot 211; the first inclined surface 444 and the second inclined surface 222 are slidably connected with each other, and the push block that pushes inward pushes the slide to move in the direction of the first guide bolt; the direction of force is changed by sliding on the inclined surface, so that the slide can be simultaneously provided with a force to move along the direction of the slide groove, thereby achieving the required opening and loosening effect.
[0042] Furthermore, the second guide bolt 442 includes a first column 4421 and a second column 4422 connected to each other, the end of the first column is provided with a thread, and a first threaded hole is correspondingly provided on the wall surface of the push block, and the first column 4421 is threadedly connected to the push block 441; the diameter of the second column 4422 is larger than the diameter of the first column 4421, and a first circular hole is provided on the push plate 420 corresponding to the second column 4422; the two ends of the second spring 443 are respectively fixed with a sliding sleeve 445 and a first pressure ring 446, and the outer wall of the sliding sleeve 445 is fixed with a second pressure ring 447, and the inner diameters of the sliding sleeve 445 and the first pressure ring 446 are the same as The diameter of the first column 4421 is adapted, and the second spring is slidably arranged on the first column through the sliding sleeve and the first pressure ring; the outer diameter of the sliding sleeve 445 is adapted to the diameter of the second column 4422, and the push plate that is pushed inward to the preset position drives the sliding sleeve to move, compressing the second spring; under this structural design, it can be ensured that the push plate will not compress the second spring at the first time, and there is a certain buffer area in the front to meet the activity space for the pushing component to be pressed into place first, ensuring that the slide will not be pushed to loosen before the secondary workpiece is pressed, so that the subsequent workpieces maintain a tightly arranged action, which is convenient for arranging and positioning and subsequent single separation of workpieces.
[0043] Furthermore, a guide block 448 is fixedly provided on the wall surface of the push block 441 close to the center of the material trough, and a guide groove 130 is correspondingly provided on the side wall of the open mouth 110. The guide groove forms a narrowing portion at the groove position, and the shape of the guide block 448 is adapted to the shape of the guide groove 130. The push block is slidably clamped in the guide groove through the guide block; the slide is restricted for the second time so that it can only move in a single direction without rotation and swinging, and maintains a position that cooperates with the slide.
[0044] Furthermore, a second through hole is provided in the middle of the guide block, a second threaded hole is provided at the end of the guide groove, a third guide bolt is movably passed through the second through hole, and the end of the third guide bolt is connected to the second threaded hole; a fourth spring is sleeved on the third guide bolt, and the fourth spring is located between the guide block and the end of the guide groove, providing the push block with an outward pushing force. On the one hand, it can serve as a limiting resistance when pushing the push block inward, and have a counteracting effect, so that the push block moves more smoothly; on the other hand, it can prevent the push block from deviating from the preset position, maintain the matching position of each component, and facilitate sequential pushing in the required order.
[0045] Furthermore, the pushing assembly 430 includes a pressure rod 431 and a third spring 432. The pressure rod is slidably inserted into the push plate, and the end thereof is limited by a retaining spring; a third pressure ring 433 is fixedly provided on the side wall of the pressure rod 431 at one end close to the material trough 100, and the third spring 432 is sleeved on the pressure rod 431 and clamped between the third pressure ring 433 and the push plate 420; the end of the pressure rod 431 away from the push plate 420 is adapted to be inserted into the first through-hole 120, and the distance between the end face of the pressure rod and the surface of the third pressure ring is adapted to the depth of the first through-hole, and a rubber pad 434 is fixedly provided on the end face of the pressure rod 431; the above-mentioned structural design can make the pressure rod the first component to contact the workpiece, and the subsequent movement of the push plate can compress the third spring without affecting the movement of the push plate, and also maintain effective pressure on the workpiece; the setting of the rubber pad can prevent hard contact with the workpiece and prevent damage to the workpiece;
[0046] It should be pointed out that the length of the blanking push rod, the length of the pressure rod, and the length of the second guide bolt need to be adjusted and adapted; it is necessary to first meet the steps of the pushing component pressing and fixing the secondary workpiece, then the pushing component pushing the slide to deviate, and then the blanking push rod pushing the workpiece to unload.
[0047] The present invention is described through preferred embodiments. Those skilled in the art will appreciate that various modifications or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.
Claims
1. A chip inductor production and processing arrangement and conveying device, characterized by: Includes trough for closely arranging workpieces; A limit assembly is installed at the output end of the trough to block the output port of the trough, forming a material discharge position for placing a workpiece; The side wall of the output end of the trough is equipped with a push-up structure, corresponding to the material discharge position setting; When the push structure pushes the workpiece, it first presses and fixes the adjacent workpiece on the upstream side of the discharge position; Then, the limit assembly is pushed to deviate to the side away from the center of the trough along the workpiece arrangement direction; Then push the workpiece loosened at the unloading position to send it to the outside; The output end of the trough is provided with an open opening penetrating through both side walls; The limit assembly includes a slide, and a baffle is fixed on the top of one side of the slide away from the center of the trough. The baffle extends upward, and the two sides of the baffle slide against the two opposite inner walls of the trough. The baffle side wall, the top surface of the slide, and the two side walls of the trough are surrounded to form a material discharge position; At least one first guide bolt is movably provided on the end surface of the material trough, and the end of the first guide bolt is threadedly connected to the slide. A first spring is sleeved on the first guide bolt, and the first spring provides the slide with a thrust toward the center of the material trough to maintain the width of the material discharge position adapted to the width of a workpiece; When the push structure pushes the workpiece, it provides the slide with the force to overcome the first spring, so that the slide moves toward the first guide bolt, increasing the width of the discharge position and allowing the workpieces at the discharge position to break away from the tightly arranged state; The push structure includes a cylinder, a push plate installed at the end of the piston rod of the cylinder, and a push assembly, a push assembly, and a blanking push rod are installed on the push plate; The unloading push rod is set corresponding to the unloading position and is used to push the workpiece at the unloading position to the outside; A first through-hole is provided on the side wall of the trough near the upstream side of the open mouth, the first through-hole being provided corresponding to the second arrangement station, and the pushing assembly being provided corresponding to the first through-hole for pressing and fixing the workpiece at the arrangement station; The pushing assembly is arranged corresponding to the slide seat and is used for pushing the slide seat to move in the direction of the first guide bolt.
2. The arrangement and conveying device for chip inductor production and processing according to claim 1, characterized in that: When the push structure pushes the workpiece, the slide moves 0.5mm~1mm in the direction of the first guide bolt.
3. The arrangement and conveying device for producing and processing chip inductors according to claim 2, characterized in that: The push assembly includes a push block, a second guide bolt, and a second spring; The second guide bolt is slidably inserted into the push plate, the end of the second guide bolt is threadedly connected and fixed to the push block, and the second spring is sleeved on the second guide bolt; The cylinder drives the push plate to push in the direction of the lower material level. After the push plate moves to the preset position, it applies force to the second spring, and the push block cooperates with the slide, and the push slide moves in the direction of the first guide bolt.
4. The arrangement and conveying device for chip inductor production and processing according to claim 3, characterized in that: A first inclined surface is provided on a side of the push block close to the first guide bolt, and an end of the first inclined surface away from the second guide bolt deviates toward the center of the trough; The side wall of the slide close to the pushing assembly is provided with a bayonet adapted to the shape of the push block, and a second inclined surface is correspondingly provided at the bayonet; the first inclined surface and the second inclined surface are in sliding contact, and the pushing block pushing inward pushes the slide to move toward the first guide bolt.
5. The arrangement and conveying device for producing and processing chip inductors according to claim 4, characterized in that: The second guide bolt includes a first column and a second column connected to each other, the end of the first column is provided with a thread, the wall surface of the push block is correspondingly provided with a first threaded hole, and the first column is threadedly connected to the push block; The diameter of the second column is larger than that of the first column, and a first circular hole is provided on the push plate corresponding to the second column; a sliding sleeve and a first pressure ring are fixedly provided at both ends of the second spring, and a second pressure ring is fixedly provided on the outer wall of the sliding sleeve. The inner diameters of the sliding sleeve and the first pressure ring are adapted to the diameter of the first column, and the second spring is slidably provided on the first column via the sliding sleeve and the first pressure ring; The outer diameter of the sliding sleeve is adapted to the diameter of the second column bar, and the push plate, after being pushed inward to a preset position, drives the sliding sleeve to move, thereby compressing the second spring.
6. The arrangement and conveying device for producing and processing chip inductors according to claim 5, characterized in that: A guide block is fixed on the wall surface of the push block close to the center of the trough, and a guide groove is correspondingly provided on the side wall of the open mouth. The guide groove forms a narrowing portion at the groove position. The shape of the guide block is adapted to the shape of the guide groove, and the push block is slidably clamped in the guide groove through the guide block.
7. The arrangement and conveying device for producing and processing chip inductors according to claim 6, characterized in that: The pushing assembly includes a pressure rod and a third spring. The pressure rod is slidably mounted on the push plate, and the end thereof is restrained by a retaining spring. A third pressure ring is fixed to the side wall of one end of the pressure rod close to the trough. The third spring is sleeved on the pressure rod and clamped between the third pressure ring and the push plate. The end of the pressure rod away from the push plate is adapted to be penetrated in the first through hole, the distance between the end face of the pressure rod and the surface of the third pressure ring is adapted to the depth of the first through hole, and the end face of the pressure rod is fixed with a rubber pad.